Actually that would be an airbender tatoo, avatar aang had them since he grew up an airbender. His succesor, Kora, DOESN'T have them, since she's a born water bender (tho her personality is more earthbender...)
Still really cool pic tho, and one shouldn't mess with an airbending kitty anyway!
angry Charr, I'd say is he pissed off because he can't transfer to his server of choice, due to the fact it's always full and what little window for transfer occur while he's at work RL? been there done that