“Karkat is a very crabby troll, in more ways than one. He spends a lot of time insulting and ranting about both his friends and the kids. This demeanor maybe inspired from the stereotype that people under the Cancer sign are said to be moody and crabby. He constantly insults others in the style of a stereotypical internet troll, supporting his arguments with what seems to be empty logic. Jade has even gone to the point of flipping out at Karkat. In keeping with the cantankerous theme of his personality, he rarely smiles. He is also often seen screaming, pounding his fists against his keyboard, or generally raging when talking to anyone. He is not particularly patient when explaining himself, making even his most sound advice appear to be random insults.”

(Taken from the Homestuck Wiki.)

I’m looking for a raspy voice, and obviously grumpy!