Ben 10, I'd say Kevin.
Flapjack, I'd say Flapjack.
Total Drama Island, I'd say Chris.

cool! my faviis are:
(i don't rly watch ben 10 that much, so i don't rly have favii chars in that)

but in Flapjack:
Flapjack, K'nuckles, Bubbie, CandyWife

Fosters:
Mac, Bloo, Madame Foster

Total Drama Island:
Owen, Bridgette, DJ, Gwen, Kadie&Sadie(they're funny ), Izzy, Harold, yea......i think that's about it-....i hope i didn't forget anyone....

Ben 10- Kevin and or Gwen
Flapjack- Flapjack ^^
TDI- DJ,Gwen, Harold, or Duncan.

Ben 10 alien force- kevin
Flapjack- knuckles
Total drama island- Gwen, noah, duncan, cody, and trent, in that order.

I don't watch any of them

there all good but i like tdi the most its funny as hell man.

you have so many favorite characters for only 3/4 shows

Ben 10-Gwen or Charmcaster, Kevin
I don't watch Flapjack
TDI-Izzy,Gwen,Duncan, and Katie & Sadie

Meh I Don't watch Flapjack or Total Drama Island, but Ben10's a good show i'd say Ben himself is kinda cool, I like his fire engulfed form he can turn into and that speedy blue creature he can become using the omnitrix - dunno if I spelled it right ^^', Ben10 Alien Force looks better than original Ben10 in my opinion though. What about Teen Titans?