Nicknames: I'm sure there are some.
Nation: Earth, Fire, Water
Alliances: his family, mostly.
Brown hair, blue eyes and almost ridiculously tall next to his mother, Takeshi stands at 6'1''. He has a pretty solid build but isn't overly muscular.
Takeshi was born to Seiko and her husband with a twin brother named Entei. He's also got a brother named Yori who is a firebender. Entei turned out to be a nonbender but does have a brilliant mind and the combat skill to keep up with any of them and then some.
Around the time that Zuko was scarred and banished their mother decided she had had enough and they left the Fire Nation. The rest of the war was spent in Ba Sing Se.
They've since returned to the Fire Nation. The jury is still out on how Takeshi feels about that. But the new Fire Lord seems to be a decent enough guy.
Takeshi is fairly skilled with a sword. He's alright without a weapon. Can hold his own in a fight, when he's got to, to say the least. He prefers not to fight unarmed, but he will. Earthbender. He's not all that powerful, really. He uses what he has, but he'll likely never be more than mediocre, even with lots of training and dedication.