[FORUM GAME] Do you recognize the source of the above avatar?

[?]

looks like it's maybe from DOOM?

Edit of arc character from his adventure thread.
Also. This is loving boring.

[Ad Bot]

[darerd]

Edited.

[No, FROHman Elite!]

GIF of blockhead spinning around, custom-made.

[Peejster]

Cookie Monster edit wielding the medigun

[Flamecannon]

http://www.youtube.com/watch?v=Sib2L6A6xgw

[Syntho]

Pokemon, either fanart or a video.

[WingZero]

screenshot from some sort of anime

[Block Box]

Google

[mrlolop]

Where wouldn't you find a box?

[Tyler66]

Custom?

[Alphadin]

EasyGIF animator and Paint and Pokemon
EDIT:

If you can't guess mine, my avatar will rape your dog.

It's from

A.K.A Boxer Hockey

[masterockets]

MSPA: Homestuck <3

[mrlolop]

Slightly modified avatar from The Search for Plornt.

[Xalos]

Presumably self-made, and it toggles images based on the post background color:

[Menen]

Its the colors red, black and white with a few special effects