|Voiced by||Tom Kenny|
Eberhardt is a character appearing in "Henchman." He lives in a cabin the middle of a swamp, where he spends his time playing piano. He thinks that Marceline's going to suck his blood, but she only sucks the red out of his tie. He then thanks her for making his tie white, and comments that it was "so beautiful." Later, Marceline asks Finn, "Are ya' thinking how that dude's tie kinda' looked like a bra?"
There are numerous pictures on the walls of Eberhardt's house that apparently show him and his wife. Eberhardt says he was married once, and his wife may be dead or divorced from him. Either way, it is likely their relationship did not end well, as just reminiscing about it is enough to make Eberhardt shed a tear.
He has a green suit and a very big red bow-tie (which turned white after Marceline sucked the red out of it) and two medals on the bottom of his suit, possibly meaning he is some kind of veteran. He has long, dark hair and orange wrinkly skin.