Name: Bob Bobbington
Race: Uber Gnome
Reason on Mars: Brother is being held hostage to force Bob to do grocery shopping.
Background: Bob hails from a royal lineage of manly gnomes from Space Gnome Britain which is located in space. He came to Earth because he heard there was some robot dinosaurs he could beat the shit out of (in a civilized and gentlemanly manner of course). He then rode on his space sofa to Earth. Unfortunately the evil Dinosaur assholes kidnapped his brother, so he had to do his bidding as beating the shit out of the dinos while they held his brother hostage would endanger his brother since Bob requires a fuck ton of space in which to beat the shit out of stuff.
Name: Balunob Bobbington
Race: Manly Tophat
Reason on Mars: Being held hostage by evil dinosaur douchebags so his bro won't beat the shit out of them. He is being carried by an evil robo dino who is escorting his brother to show that his bro is in danger.
Background: Several millenia ago, Balunob pissed off the Elder Chieftan King Man by doing his wife... repeatedly... in his house... in his clothing... while eating his steak... so the Elder Chieftan King Man killed Balunob and reincarnated him as a tophat. Slightly fewer millenia ago, Bob was born and Balunob swore to look over his lil bro... by sitting on top of his head...
Personality: (some other time)