Do comics have sexual preferences? I, honestly, do not know. I have not been present during the disgusting mating rituals comics (both male and female) undertake. I assure you though, they do have penises and possibly vaginas.
I can, however, tell you that the name Three Dollar Bill comes from the saying "Queer as a three dollar bill", which when it was originally coined, meant someone that was strange or odd. Since I can say words and make them mean the things I want them to mean, I use the word to describe something that is simply 'odd'. Hence, the comic was thusly named, hopefully because It is strange and odd and/or different. We don't care if you like hotdogs or tacos, as long as you like the comic!
Shadow is based on my self and I have one blue eye and one green. It is actually a condition called Heterochromia, and it gets ALL the ladies. My eyes also change color between the two, so if you notice Shadows eyes switching color from one frame to the next, I am just being lazy, but that's my excuse.
Trent is based on my real life older brother and Snow Is my wife, Jennifer Matos. Tortie, well no one cares about him, but he is a real turtle.