where did tarakudo first appear after emerging from in jackie chan adventures season 4 episode 1?

Tarakudo first appears in Season 4, Episode 1, “The Masks of the Shadowkhan” of Jackie Chan Adventures. In that episode, Daolon Wong accidentally awakens him, and Tarakudo appears as the King of all Shadowkhan.

Quick Scoop

• First appearance: Season 4, Episode 1.
• Episode title: “The Masks of the Shadowkhan.”
• What happens: Daolon Wong’s summoning attempt brings Tarakudo into the story.

The episode centers on Daolon Wong trying to escape prison by summoning the Shadowkhan, but instead he unleashes Tarakudo.[4][2]

TL;DR: He first shows up in **“The Masks of the Shadowkhan”** , the opening episode of Season 4.