[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 episode serves as a "What If?" scenario, specifically referencing the events of the pilot episode "Wasabi Warriors". [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 plot focuses on Jerry Martinez, who is

The disciplined sensei who suspends Jerry; "evil" version in the vision. Mateo Arias 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

realizes the positive impact Jack has had on all their lives and, upon "waking up," finally earns his black belt. Cast and Key Characters

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.