The Tengu Shredder (Oroku Saki) is an antagonist from the Teenage Mutant Ninja Turtles 2003 animated cartoon series, who served as the main villain of the Ninja Tribunal season. In the 2003 continuity, the Tengu Shredder is, in fact, the original incarnation of the Shredder.
The Shredder was an ancient demon that terrorized Japan long ago. A team of five of Japan's greatest warriors, the Ninja Tribunal, were sent to oppose the Shredder. Eventually, the demon was slain by Oroku Saki, but he'd secretly struck a bargain with the dying tengu and allowed him to merge with the mortal--the two then became one.
Now the new Shredder, Oroku Saki began a reign of terror over Japan before he was overthrown by his former comrades and sealed away.
During the time he was sealed away, an Utrom criminal named Ch'rell took the identity of the Shredder to become feared, respected, and gain a legion of followers in what was to be known as the Foot Clan.
Tengu Shredder only appears on the Fiction Wrestling Twitter as an antagonist.