The disciplined sensei who suspends Jerry; "evil" version in the vision. Mateo Arias
Olivia Holt returned as a guest star for this episode (and several others in Season 4) after having left the main cast to pursue other projects. [S4E17] You Dont Know Jack
The episode serves as a "What If?" scenario, specifically referencing the events of the pilot episode "Wasabi Warriors". The disciplined sensei who suspends Jerry; "evil" version
The vision includes a humorous (and possibly non-canonical) detail that Sensei Ty has 17 toes. The vision includes a humorous (and possibly non-canonical)
"[S4E17] You Don't Know Jack " is the 17th episode of the fourth and final season of the Disney XD series , which originally aired on March 11, 2015. This episode is notable for being a Jerry-centric story that explores an alternate reality of the Seaford gang. Episode Summary
You can watch this episode and the rest of the series on the Kickin' It page on Disney+. You Don't Know Jack (2015) - (S4E17) - Cast & Crew - TMDB