Dimuit is a mass of nanobots, controlled by several different conscious personalities. Though each one isn't as complex as a singular person's, they all together work to keep the mass working as one. Being a mass of nanobots, Dimuit tends to assume the form shown here when in most encounters to keep other's feeling comfortable (in other words, not freaked out) while they have fun.
When it comes to nourishment, Dimuit's nanobot swarm converts near any matter into energy for it to harness. Even while standing there are usually small, though imperceptible, tentacles of nanobots converting nearby matter to energy for it's stores. Additionally, these bots can manipulate most cells in biological creatures for various purposes, from pleasure to pain and anything inbetween. Keep yourself on the mass' good side, in other words.
(more added as decided)
Art by buttburner