Larvox and Mogo are my two favourite Green Lantern characters. Larvox because he's so ridiculous, essentially a giant amoeba with arms, legs and flowing ginger hair (try looking for him in any large GL battle scene, he'll be there somewhere), and Mogo because he's a planet. It made perfect sense to me that the two would team up someday. If you check the tabs at the top of the page you can read a short comic I drew about one of their missions together.
As an extra bonus here's some pictures I did of them dressed as other characters, because Mogo may not socialise, but he almost certainly cosplays.