Uuuuuuu character idea methinks,,,,, tall robot that's a humanoid shape but is very very mechanical, their head is like, kinda rectangular and looks like a bunch of drives and computer parts, maybe with like a spinny bit or... Something, struggling to like, think of how to describe it satisfactorily at the moment. But their "face" has an OLED screen for "eyes" (they actually have a pair of cameras on the top of it for actual eyes, and can connect to other cameras to use them if wanted), and their short snout is actually able to fold out into a keyboard, maybe with a trackball or some other mouse equivalent,,,
LOTS of exposed bits and machinery and such when not wearing clothing, maybe dip into the "boobs or belly as coolant storage" trope, and they have a big heart that is literal pumps to pump coolant throughout their body, primarily to their head and to their big radiator wings (detachable, but kept on when not connected to an external heat management thingy)... Also to their mouth, which can spray out coolant when a bit too hot, to help remove heat from the system entirely. Also is where coolant goes in, because uhmmmm mouf
Maybe have various connectors in their fingers for plugging into most things, as well as a retractable cable where their tail would be for power connecting.
Always loud with fans and pumping, head having those heat waves or uh... Mirage waves? Forgor the name, but those around it, constantly breathing out a hot mist and sharply inhaling with a very pneumatic sound, constantly overheated and processing all the time. Depressed and slow-to-think computer that's broken to constantly be trying to simulate everything, all the time, for all potential situations, and it's not all that good for them. Basically always found drinking from a portable coolant container (like a cup!) And being somewhat erratic, if still wanting to please due to being built to serve.