[s4e17] You Dont — Know Jack

The main character who seeks his black belt and experiences the alternate reality. Dylan Riley Snyder Jack's loyal friend who assists at the dojo. Rudy Gillespie Jason Earles The dojo's sensei who struggles in the alternate timeline. Kim Crawford Olivia Holt

The disciplined sensei who suspends Jerry; "evil" version in the vision. Mateo Arias [S4E17] You Dont Know Jack

The plot focuses on Jerry Martinez, who is frustrated when Jack Brewer suspends him from taking his black belt test after Jerry throws an unauthorized party at the dojo. Following a blow to the head, Jerry experiences a vision of an alternate universe where Jack never joined the Bobby Wasabi Martial Arts Academy. In this reality: The main character who seeks his black belt

The episode features the main series regulars and several recurring guest stars who return for the alternate-reality sequences. Role in Episode Leo Howard Kim Crawford Olivia Holt The disciplined sensei who

This episode marks a significant milestone as Jerry finally earns his black belt.

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

The vision includes a humorous (and possibly non-canonical) detail that Sensei Ty has 17 toes.