Indigo

Sheldon and Leonard reflect Daniel, Simon and Michel, even though there is an extra character. like Sheldon and Leonard, they all shear a apartment, like video games, and other aspects such as comics, anime, and other sorts of things

Like Edd, Matt, and tom, Simon, Daniel and Michel tend to have some sort of adventure, wether or not they are intended, the 3 always get into some sort of trouble

Daniel appearance, personality and life is partly based off Barney from how i meet your mother they are both rich, non of their friends know what there job is, and are slightly immature at the wrong times and tend to be up to something

Old Man fro downstairs from friends is the inspiration for the grumpy old man living next door that hates Michel

Death in Indigo shears some traits that Grim has, they can both be serious and silly, but death in indigo has a more menacing appearance