(proper name) The general name for a user-created character in the 2017 video game Sonic Forces. As the latest entry in the Sonic the Hedgehog franchise, chances are the character will be a hedgehog. Often used by a Sonic hater.

Extem the hedgehog is my very own oc Sonic character! Extem was created by sonic.exe but Extem didn't like killing people, so he left to go on his own adventures. With the power of the Special Stage Rings, he can travel into different universes entirely, his favorite being the fnaf universe.

the act of sex when you shit on your partners back and tell him/her that this cute little hedgehog lives there from now on