Fill Callie's quadrants! They're all empty as of now. Basically comment below. Of course, I'll either confirm or deny your request depending on if I think Callie herself would accept. For example, I don't think Karkat and Callie would be matesprits. Karkat's too harsh and Callie's too sensitive. Don't take it personally if I deny your offer. It's all for roleplaying purposes.