Hussie's answers on his tumblr do two things for me.
1. Gamzee as shortest troll at least temporarily (he can age and grow) confirmed canon.
2. SeXy RoSe and RoXy is now a thing even if he never intended it to be so.
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Soft kitty, warm kitty, little ball of fur
Happy kitty, sleepy kitty, purr purr purr