Marauders

The Marauders make their first appearance in "Memories of Boom Boom Mountain." The Marauders are a group of large, buff, blue, male humanoids that enjoy roughousing, and live together in the Marauder Village. In "It Came from the Nightosphere," they get their souls sucked out by Marceline's father. Since then, their village has become the site of Flame Princess' house. Its unknown if the souls have returned to the Marauders or if they are still alive.

Appearance
The Marauders all have their own individual characteristics, but can be identified by their blue skin, fur pelts and armor. Several marauders have mechanical parts, micro chips, and goggles. Some of the Marauders seen in Memories of Boom Boom Mountain are:

Trivia

 * The Marauder leader says (to Finn) "not bad, for a human boy!" implying that Marauders are not humans. Pendleton Ward has referred to the Marauders as "necrotic cyborgs," possibly in a jocular manner.
 * If heard closely at the end of their debut episode, one of them screams the popular Wilhelm scream.
 * The Insane Tantrum Scream can also be heard.
 * The Marauders tell stories and jokes at night, as seen in the episode "It Came from the Nightosphere."
 * As seen in "It Came from the Nightosphere," the Marauders are capable of engaging in intellectual conversation, indicated by the joke of the lead Marauder's punchline being "That's what I think of Expanding Earth Theory!"
 * The Marauders seem to be based on Norse mythology, specifically the concept of Valhalla where the gods spend eternity feasting and fighting. Some of them have wings on their helmets, similar to the popular portrayal of Thor.
 * The Marauders seem to live in the Mountain Kingdom or somewhere near it because of the large mountains around their village.