Omega Sector Quest Guide & Tips

Before you go to the Omega Sector:
If you're leaving from Vic, make sure you get the letter from Chief Stan in Henesys to give to Dr. Kim!
Before leaving Ludi, collect:
30 table clocks (from Tick-Tocks) (You only need 20 the first time, but you might as well...)
4 Rombot's memory cards from Rombot for the Control Program quest (if level 50).
Don't worry if you went before getting these things, since you'll be required to go back to Ludi for items and to talk with NPCs there after initiating/completing some of the OS quests; this is just a suggestion if you wanna get the most bang for your buck on the first trip.
Also, remember to speak with Korin to activate her quest, requiring a visit to OS.
Empty your etc. slots! All of 'em. =p
Korin's Lost Memory (level 25)
Tip: Speak with her before leaving Ludi, so that the Mateons will drop her Memory Pieces while you do the Mateon quests in OS. Unfortunately, the Pieces of Korin's Memory are only dropped during the quest, and you can only have 5 of them and cannot give them to other players.
Talk to Korin, located in the last house to the left on the screen between the main Ludibrium town screen and the entrance to Eos Tower.
Next speak with Agent Marco, located near the left exit of Omega Sector's main town screen. He needs you to find 5 pieces of Korin's memory from the Mateons.
Bring back the 5 pieces of Korin's memory to Agent Marco, and he'll combine them into an Aquamar--er, into Korin's Memory.
Complete the quest by returning Korin's memory to her in Ludi.
Combined Rewards: 4700 EXP, 5500 mesos, 60% Scroll for Helm. DEF.
Dr. Kim's Comments (level 30)
Required: Chief Stan's Letter
Take the letter from Chief Stan to Dr. Kim to initiate the quest. Dr. Kim is located in the Command Center (the door left of the 1 2 3 doors).
Dr. Kim will give you a blueprint machine that you must show to Chury, Hoony and Gunny. First you'll take it to Chury, located in the Silo (at the very top, so go in door 1).
Chury will tell you to show the blueprint machine to Hoony, located in Boswell Field III, as well as give him 20 Space Foods (collect from Barnard Gray - go to Kulan Field area before going to Hoony in Boswell Field).
After visiting Hoony and giving him the items, he'll give you a laser gun to give to Gunny when you show him the blueprint machine. Find Gunny in Boswell Field V.
After talking to all three, report back to Dr. Kim to end the quest.
Combined Reward: 12600 EXP, 12000 meso, 7 Command Center Warp Capsules, 2 fame.

VIP Ticket to Florina Beach: (level 30)
Tip: Other quests involving Mateons listed below.
Talk to Kevin the Solider, located toward the left exit of the Omega Sector. He'll ask you to get him 30 Mateon Tentacles. They also will drop a piece of a Ripped Travel Ticket. After you find both, go back and talk to Kevin.
Kevin will give you the other part of the ripped ticket. Talk to Nana the Tour Guide in Ludi to initiate the next part of the quest (not listed 'cuz it doesn't involve OS!).
Reward: 4000 EXP, Ripped Travel Ticket 1 & 2.

The Ore of Dark Crystal/Where's the Power of Origin?/Terminating the Dark Force (level 31)
Special thanks to all the people who posted about the new quest item status!
Tip: Leave it to WizNX to change things on us! The Dull Crystals are now quest items, meaning, you'll have to activate this one to get them to drop at all, and they can't be sold, etc. Another bummer (thanks for the info ferret and Randstein ) is that you can only carry as many as you need for the current round, so you're stuck returning again. The good news(?) is that, since you're stuck hunting in the tower, you'll have plenty of Eos tower scroll quest items from hunting bunnies on those screens; also, you could take the opportunity (while you're at the tower) to hunt Rombot if you didn't get your memory cards yet.
Talk to General Maestro, located by the entrance to the silo. He requests you collect 20 dull crystals from drum bunnies at Ludi.
After giving him the crystals, Maestro wants you to find him Gray's Document, which is located in a box in Kulan Field II.
After giving him the Document, Maestro will ask for 30 more dull crystals and 10 dark crystal ores.
Combined rewards: 13800 EXP, 28000 Mesos, Random Overall Armor scroll.

Eliminating Grays (level 37)
Tip: Activate this quest (if level permits) during Dr. Kim's Comments while you're looking for the 20 Space Food, since you'll be there anyway. If you can do the Trading With Alien Gray quest and want to get it over with, go next field over to activate it while you're there.
Find the Black Mesoranger in Kulan Field I, who will request that you kill 30 Barnard Grays.
Reward: 5400 EXP, 100 Mana Elixir Pills.

The Alarm Clock (level 38)
Special thanks to all the people who posted about the new quest item status!
Tip: Special Batteries are now quest items, so you can't get them beforehand. But the good news is, you can do this part before you go. Get your 20 (and the extra 10 for later if you like) Table Clocks before you first go, so you'll be able to activate the next quest before returning to Ludi so you can get those batteries droppin'. This is a good one to squeeze in when you're out in Boswell field for the Mateon tentacles.
Talk to the Pink Mesoranger, located in Boswell Field II. She asks you to get 20 Table Clocks from the Tick-Tocks in Ludi.
Activate the next quest by giving her the items.
Reward: 4200 EXP, 50 Dried Squid.

Assembling The Alarm Clock (level 38)
Required: The Alarm Clock. A good one to activate at the same time as the General Maestro quests.
This time the Pink Mesoranger needs 10 Table Clocks, plus 2 Special batteries (from Master Robo) and 10 Cogs (from Cronos) to make a Super Alarm Clock.
Activate the next quest by giving her the items.
Reward: 5500 EXP, 50 Fat Sausage.

Delivering/Completion of the Alarm Clock (level 38)
Required: Assembling the Alarm Clock
The Pink Mesoranger has given the parts to Kevin the Soldier, who has made her a Super Alarm Clock. She asks that you get it for her.
Return to Omega Sector town and get the Super Alarm Clock from Kevin (and 500 EXP).
Deliver the alarm clock to the Pink Mesoranger.
Reward: 3200 EXP, 3 Command Center Warp Capsules, 3 Ludibrium Warp Capsules.

The Antidote (all parts) (level 40)
Tip: This is one of many quests involving Mateons (it's almost as bad as the Z. Lupin dolls ). It is suggested that you activate both this and the Green Mesoranger quests at the same time if level permits, since you'll never want to see a Mateon again by the end of this one.
Find Rice The Medic toward the bottom right of the Omega Sector town. He needs you to collect 100 Mateon Tentacles for the first round.
Don't forget to speak with the Green Mesoranger to get credit for 100 of those Mateons sometime during your hunting!
This quest is done in rounds, just like the cursed doll quest. The total number of tentacles you'll need is 1500; the quest runs 5 rounds : 100 tentacles, 200 tentacles, 300, etc.
Combined reward: 27500 EXP, 50 Holy Water, 50 All Cure Potions, 50 Elixirs, 30 Power Elixirs, and lvl 40 shoes according to class.

Eliminating Mateon (level 41)
Tip: Do this one sometime during the above quest
Find the Green Mesoranger in Boswell Field IV. He'll ask you to defeat 100 Mateons.
Reward: 5100 EXP, 20000 meso.

Eliminating Plateon (level 41)
Requirements: Eliminating Mateon
After doing the Mateon quest, talk to the Green ranger, who wants 100 Plateon Helmets from the Plateons in Boswell Field II+ this time.
Reward: 5600 EXP, 50 Orange Juice.

Eliminating Plateon and Mecateon (level 41)
Requirements: Eliminating Plateon.
This time, the Green Mesoranger wants you to kill 200 Plateons, and bring back 150 Mecateon laser guns. Mecateons are located at Boswell Field III+
Reward: 6100 exp, gloves according to class.

Supplying the Robotic Parts (level 30)
Requires: Dr. Kim's Comments
Tip: Activate immediately after finishing Dr. Kim's Comments, so that when you are required to go back to Ludi for other quests you'll be able to talk to Assistant Cheng.
Pretty self-explanatory, so I'll save the typing since this quest has no shared monsters and is not in proximity to other quests.

Collecting the Robotic Parts (level 30)
Not available yet in GMS... I have noticed that the parts are dropping... I imagine that they'll eventually add it, and the parts will become quest items like the dull crystals, et al.
Speak with Dr. Kim again after finishing Supplying the Robotic Parts. The parts have been stolen, and he wants you to go to Boswell field to get them back.
Each box of parts is located in a different Hidden Street off Boswell Fields III thru V. Box of Parts 1 is at Plateon Field, Box of Parts 2 is at Mecateon Field, and Box 3 is at Mateon Field. The Parts Boxes are all hidden inside these reactor boxes that you have to break open.
Return the boxes to Dr. Kim.
Reward: 4200 EXP, 3 Ludibrium Warp Capsules, 3 Command Center Warp Capsules.

Where is Dogon's HQ? (level 35)
Required: Dr. Kim's Comments. This one doesn't have any shared monsters, so it's not important to do in conjunction with other quests, but if you never wanna visit Kulan V again, wait till you're level 47 and do this with the other quests out there in one shot. Another tip: since Chuly is in the Silo, if you've not done the Trading With Alien Gray quest yet, you can activate it on the way to the HQ and do it when you give Chuly back the stuff (or finish it from earlier if you haven't yet when you talk to Chuly to activate the quest).
Talk to Chury at the Silo, who asks you to find Dogon's secret headquarters and retrieve Dogon's Report from there. Since all the entrances I'm describing are invisible, you might wanna look at the group of map pics toward the bottom of this page to get a better idea. BTW, that's not the Pink Mesoranger, that's whoever made that screenshot's character.
Dogon's HQ is a hidden street off of Kulan Field V. You go all the way to the top of the platform at the left side of the map, and try pressing up around the area where the flowers are until you get in. (top 2 pics)
On the next screen, you'll go to where some of the cattails are in front of the trees, closer to the wall (just keep pressing up until you get it...).
Now, go the top of the chimney second from the right and press up. This takes you to the 2nd chimney. (next pics) Press up again, and you're taken to another screen.
Now you're almost there... you have to make it to the top by choosing the right platform out of each group of three and pressing up. The sequence is: middle, middle, right, left, right, left, middle, left. (bottom pics)
Now break open the box to get that report (and it takes several tries sometimes ><)! Return it to Chury. And then kill him for making you go through all that trouble. XDDD Reward: 5700 EXP, 15000 meso, Cat's Eye earrings. Hoony's Toothache (level 31) Thanks Bohrian for telling me about availability! Required: Activation of Supplying the Robotic Parts. Go ahead and buy the Pain Reliever before activating the quest, so you only have to make 1 trip. You can get it from Dr. Pepper, located in the Silo. All you have to do is talk to Hoony in Boswell Field III, and give him the pain reliever. Reward: 3000 EXP, 3 60% Pet Equip Speed scrolls. Chief Gray's Sign (level 47) Required: Supplying the Robotic Parts. You can collect the Chief Gray Signs at any time, it seems, so you can just collect them while doing the other Chief Gray quest and then talk to Gunny and give him the items in one shot (correct?). Talk to Gunny in Boswell Field V, who wants you to collect 5 Chief Gray's Signs. Return the items to complete the quest. Reward: 5200 EXP, 100 Fat Sausages. Eliminating Chief Gray (level 43) Requires: Eliminating Grays (haha, sounds like a hair dye commercial) Tips: This is a good one to do in conjunction with Chief Gray's Sign (if it's available/if you haven't done it already, or the Yellow mesoranger quest.). You can also hit the Dogon HQ quest while you're out this far, if you haven't done it already. Talk to Black Mesoranger at Kulan Field I, who requests that you get 3 Notes from the Chief Grays (they spawn like Rombots, it seems), located at Barnard Field, Kulan Field IV and Kulan Field V. Return the three notes to Black Mesoranger. Reward: 5800 EXP, 25000 mesos. Trading With Alien Gray (level 44) Tip: You can activate it while you're out doing the other Gray quests, and speak with Chuly while you're in the Silo looking for the documents if you haven't done/finished the Dogon HQ quest yet. Find Alien Gray at Kulan Field II. He wants you to get him 3 secret documents. The secret documents are in 8 boxes you need to smash open that are located around the Silo. They look like this. Give Alien Gray his documents (maybe on the way to another quest?) Reward: 3400 experience, 3 Alien Sacks. The Effort to Make-Up (level 44) Required: Trading With Alien Gray. You can do this one while doing the Zeta Leticulan quest/Chief Gray quests. Visit the Yellow Mesoranger located in the Off-Limits area, who needs you to prove your loyalty by killing 120 Ultra Grays, located in Kulan fields III thru V. After killing the Grays, speak with the Yellow ranger to complete the quest. Rewards: 5700 EXP, pansy earrings Collecting Meteorite Samples (Still not available in GMS.) The History of Zeta Leticulan (level 45) Requires: Eliminating Chief Gray. Tip: The alien cells are quest items, so they won't drop until you activate the quest, and you can't give them to other players. =/ After completing the Chief Gray quest, talk to the Black Mesoranger, who wants you to collect some alien DNA. You need to get 1 cell from each kind of alien: Barnard, Ultra, Chief, and Zeta Grays. Return with all the cells to complete the quest. Reward: 6200 EXP, 10% ATT scroll, depending on class. Fuel for MT-09 (level 50) Find Kay in the Silo (all the way at the bottom). She asks you to get 5 fuels from MT-09. Hunt MT-09 at the Defeat Monsters hidden street. To get here, you need to go all the way to Boswell Field VI, and press up on the boulder-thing in the upper left platform (it's the only one on the screen.), which takes you to the top of the tall wall in the middle. Just press up again on the flowers. You'll have to be patient, since MT-09 is a boss-type monster. Return the fuels to complete the quest. Reward: 5800 EXP, 50 screws The Control Program for Rombot (level 50) Requires: Fuel for MT-09. This one is great because you don't have to actually go anywhere if you have all your Memory Cards with you, so don't forget to kill the Rombots on the way into OS before doing this one! After completing the MT-09 quest, talk with Kay. She wants you to get 3 Rombot's Memory Cards from ludi (but don't forget it's really four!), and give them to Porter to decode. Chat with Porter, located in the OS Command Center (by Dr. Kim). Don't forget to have 4 Memory Cards with you! Porter will ruin one, then finally get three of them right for you to give back to Kay. Combined Reward: 7100 EXP, 3 Command Center Warp Capsules. The Missing Dropship (level 50) Requires: The Control Program for Rombot. Self-explanatory (see link). Initiate by talking MapleStory Powerleveling to Porter. Note the location of the Dropship in Plateon Field.

Other quests will be added if they become available on GMS. I might put up the missing ones that aren't available just for fun sometime, I dunno. If you need help with finding a location, Hidden Street has their maps up now, so go check it out! ^_^