He-Ra's uncle

He-Ra's uncle was the brother of He-Ra's mom and brother-in-law of He-Ra's dad (the son of the original He-Ro) who eventually passed down the Power Sword to He-Ra. He was depicted in the 2012 DC series.

He-Ra's uncle was the 2nd man to wield the mantle of He-Ro, following the original Ro/Gray who died defending his dad D'vann Grayskull from Hordak. He was the only surviving son of D'Vann ("King Grayskull") and his wife Queen Veena (the original sorceress)

It's not known whether he had any brothers (as "surviving" implicates) who might also be identified as D-vann's son or Veena's son.

Although the name of He-Ra's mom is not known, the next known person to take up the role of sorceress was Kuduk Ungol.

He-Ra is not known by any other name, although the past of Teela Na has not been entirely fleshed out prior to the start of the main series when Adam inherited the power sword. It is known that like He-Ra, Teela Na was the guardian of the Power Sword, but it is not known if she could have used it or if she had always been bound to Castle Grayskull and unable to leave it as soon as she inherited the sorceress mantle from Kuduk.