what are these character heads

[Goosecheese]

what are these characters posted on the peoples heads what are they from ?!?
EVERY BODY POSTS THEM EVERY WHERE



WHAT ARE THEY

[My.Immortal]

Those are little things from a comic blog or sometimes tumblr where usually people use it to describe a situation, a face they are making, how the are feeling ect.

[Goosecheese]

no but they're like men with yellow and orange horns i'll send you a pic if i can find one

[Tussle]

Those are Homestuck Trolls, from the webcomic Homestuck that's rather popular.

[Goosecheese]

thankx