Copypasted from a comment on dA:

The big lizard guy is Gorbodus, he's the warden of a huge prison in space. He's naturally a blueish colour but it changes and gets redder as he gets more worked up and angry, so as he is a temperamental person, he's most often in the orange/red area. He's somewhat cruel and VERY serious about his job, despite that he is indirectly involved with pirate activity behind the scenes. He's the initial antagonist in Lillian's story.

The pink guy is Onky, he's one of the guards working in the prison. He's somewhat uppity and tense and kind of a kiss ass to Gorb, he has intense fears of failure, disappointing his peers/boss, doing stupid shit etc. He's very serious about his self image and his job. Gorb's an egotistical asshole and appreciates Onky's yesman qualities and has sort of taken him on as a right hand man. Onky is mostly neutral but basically a villain because of his loyalty to Gorb.

In this universe there's a very big company that produces various robotics, most notably starships with built in AIs that can act as companions, autopilots, etc. Wheb is Gorb's ship's AI, who he had a separate body built for so he can cart Wheb around with him wherever he goes. Wheb is programmed to be unshakably loyal to his owner (Gorb) and 100% obedient, which obviously Gorb appreciates a lot which is why he wants Wheb around all the time. Wheb wasn't programmed with much of a personality and is mostly quiet.