Hello, and welcome to the forums.
Well, 'technically' everything can support, ust in different way. It depends what you mean. Brutes Can support by taking it to the enemy and drawing fir from the squishes. Domintators can support by making the enmy unable to attack. Stalkers Can support by taking out key targets, making the battle easiar.Masterminds can support by buffs and debuffs, albeit with a limited range. If you meant it in the terms of buffs and debuffs, then corruptors are the best choice on CoV. Assuming this is what you meant, as buffs/debuffs are the most direct way of supporting, I'll give you some advice on them:
However there primary set is an offensiveone, so in order to play on the strengths of a corrutor you should take some damage dealing powers. The nice thing about the corruptor primary sets is that they all (except fire and assault rifle) carry some form of deuff. As a supporter, the key here would be to slot the offensive attacks you do take for there debuff as well as damage. Rad has a defense debuff, ice has a slow effect, Soinc has a resistance debuff, Dark has an accuracy debuff and energy... well it's not reall a debuff but energy has a chance to knock back giving you time to launchsome abilities. The key with energy is to utalise perma knockback so may not be what you are looking for here. When choosing a primary set for supporting, my advice pick one where the effects compliment the main debuffs in the set, as they will stack, and allow you to be even more potent.
As a supporter, you are going to want to focus on your secondaries. Again it depends what kind of supporting you want to. For all round versatility take traps, it has a VERY mixed bags of tricks to help in different situations. Ice offers alot of slows making your opponets attack you less. I'm sure it does something else well to but I can't remeber at the moment. Thermal has some heals, some nice buffs and some potent debuffs. Its a more limited mixed bag than traps, focusing on a few area of expertise. Rad is debuff crazy but has a good buff in accelerate metabolism. THis is a very good set for enhancing the damage potential of your allies. Kinetics is also good at this, but work better in a combination with your own attacks. However kin is not great for a supporting role as it does not offer much damage mitgation. SOnic, hoever does and is a nice offensive set as it lowers damage resistance around allies and also has plenty of protective buffs. Along with thermal, this is the set i most want to explore, personnaly. Dark is a good one two, with plenty of debuffs to stop your opponetnts hitting you, plus a nice rez. It's a good supporting set.
If you want, feel free to send me a PM on here with the sets that you want to have and I'll draw up a plan of what I would do with the sets.
Take care dude. Hope it goes well!
Thanks a lot, I apreciate your help. That is exactly what I was looking for, a brief explanation.
I will probably start the game in 10 days or so.. I will definetly PM you for further assistance. So far I played a empathy defender, I like the character and all but I need something more relaxed, like some uber buffer guy 
Thank again.
Yeah, empathy is frantic. Always having to watch your teamates health bars. No worries, happy to have helped. Uber buffer eh? Anything with kinetics is good for that, but it will be quite popular. If you're like me and wanna try something different, then go for */sonic. I'll be starting CoV tehn to with a corruptor, so if you want, we can duo and I can give you a hand. I'm not the most expeirenced person on this game, but I'm always happy to help, and I know a few good tricks
hi all this thread is pritty cool any one want to talk about cov
On beta I noticed that poison secondary with masterminds seemed a nice all-around supportive set.. It has sorta weak heal that recharges fast (really weak at first but gets better when enhanced), clear mind-sorta power, and resurrect. As other powers go it gets a hold, a trap power and of course 3 debuff attacks that resemble rad defenders. I also noticed that recall friend is nice to have cause you can tp the pets that are stuck somewhere and hover+teleport seems a nice travel power for a MM.. with this assortment of powers I consider that I was a nice support character.. Got as far as lvl 24 on beta. Just my 2 infamy.
Oh yeah, thanks for the great tips, I apreciate it.
Overall support character, thats what I am looking for
I know that as in every new game for me, I cant just match my perfect build from the start, thats why I will experiment with a few ATs at the begining.
So every post you make is of great help to me, thank you guys
Currenty I am waiting for CoV to be downloadable on plaync.com, I cant wait to join you guys
Hello, I am planning to start CoV soon, but i dont know anyhting about the classes. Can someone please explain some nice support builds in CoV, ty.