These first three I can tell are almost directly copied off of wikipedia, which is kinda against the spirit of this thing and borderlining being against the rules. If you can tweak 'em some and put 'em more in-your-own-words, I'll reconsider them.
Hayflick and Tinklebottom are kind of awkward. Describing events that happened in episodes with the characters isn't exactly what should be in here, and that can move into some spoilery territory.
Hayflick, Max Von Sydow, and Chet could use just the tiniest bit of tweaking. I think I'll do that after I take a nap. You'll still get credit for the submissions.
Jason Sudeikis & A.D. Miles' characters I hadn't planned on even giving descriptions, because not much can be said about them. The one for A.D. Miles is good, though. I'll think about it. Maybe I'll throw in both and give you credit for 1 submission for both of 'em or something.