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.
realizes the positive impact Jack has had on all their lives and, upon "waking up," finally earns his black belt. Cast and Key Characters [S4E17] You Dont Know Jack
Returns as a guest star, appearing as Jack's "evil" partner in the vision. Ian Reed Kesler Guest stars as the leader of the Black Dragon dojo. Falafel Phil Dan Ahdoot Guest stars as the owner of the local eatery. Notable Trivia Olivia Holt returned as a guest star for
"[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 Ian Reed Kesler Guest stars as the leader