Snowman

History
Klaus Kristin is the hybrid son of a male yeti and a woman named Katrina Kristin. He came to Gotham City in "Where Walks A Snowman " to freeze it over only to run afoul of Batman, where is then quickly and soundly defeated. In Detective Comics #522, "Snowblind " Batman hears rumors that a yeti, fitting Klaus description, is in Tibet. He goes there to capture the Snowman, only to end up battling him and his father. It was assumed that the Snowman presumably perished in the fight, falling from a cliff.

However, Snowman later appeared in Justice League Adventures issue #12 (based on the Justice League animated series). He along with Mr. Freeze, Captain Cold , Killer Frost , Minister Blizzard , Icicle , Cryonic Man , and Polar Lord (General Eklu of the planet Tharr, home-world of Polar Boy) formed the super-villain alliance known as the Cold Warriors. The group attempted a hostile takeover of a small African nation, and were defeated by the Justice League. His current whereabouts are unknown.

Powers and Abilities
Snowman has control over ice and snow. He also has super-strength.

In other media
An unlockable minor playable character in Lego Batman: The Videogame named "yeti" bears a striking resemblance to and may be the Snowman.