That hedgehog seems nervous.
Hedgehog is an NPC that appears on level 23 of the dungeon. It's a unique character with a special interaction sequence:
There is no practical benefit from the Hedgehog, but he can give the player a Pasty. After receiving the pie, the only thing that the Hedgehog will do is to act as a human shield against the long-range Scorpio attacks. This should not occur often, because the Hedgehog is extremely fast and you just won't have time to run after him.