Captain Thunder: he was a one off character in Superman v1 276. A blatant copy of Captain Marvel for a clash of the titans story.
He was given his powers by the last Mohegan shaman.
Tornado--power
Hare--speed
Uncas--a great Indian chief--bravery
Nature--wisdom
Diamond--toughness
Eagle--flight
Ram--tenacity
I'd keep the powers, but I'd change the origin and character a bit. William is an American Indian youth having grown up on the reservation of his people--whatever tribe, probably the Mohegans as a nod to the original story. Throughout Mohegan history, the Shaman have been blessed with special powers--due to mystically activated meta-genes The current Shaman is growing old and in a vision is told to go visit William. William has a meta-gene, and is next in line to be the Mohegan shaman. During the right of passage, he is endowed with the powers listed above, and later finds himself out in public, in the midst of a city battling some threat or another. The name Captain Thunder is coined for him by a newspaper. Not sure on how he'd look, just yet, but it would be something traditional, and classicaly American Indian, while refraining from stereotype. I want to give him a weapon or something too, like a tomahawk which he focuses his power through.