| Run by Sensei Rudy, the Bobby Wasabi Martial Arts Academy is the worst dojo in the nationwide Bobby Wasabi chain and is in danger of closing. But things change when Jack reluctantly joins the dojo and meets his new crew, including tough guy slacker Jerry and confident martial arts expert Kim. The crew teaches a group of neighborhood goofballs about life, karate, and how to "kick it." Jack and the gang quickly realize their newfound friendship will take them places they've never imagined and, united, they can become unstoppable. |
| Name | Character | Episodes |
|---|---|---|
| Mateo Arias | Jerry Martínez | 85 |
| Leo Howard | Jack Brewer | 85 |
| Jason Earles | Rudy Gillespie | 85 |
| Dylan Riley Snyder | Milton Krupnick | 85 |
| Olivia Holt | Kim Crawford | 70 |
| Brooke Dillman | Joan Malone | 29 |
| Dan Ahdoot | Falafel Phil | 20 |
| Joel McCrary | Bobby Wasabi | 17 |
| Wayne Dalglish | Frank Bickle | 13 |
| Ian Reed Kesler | Ty | 9 |
| Eric Nenninger | Principal Funderburk | 7 |
| Jimmy Bellinger | Albert | 6 |
| Evan Hofer | Randy | 6 |
| Rio Mangini | Sam | 5 |
| Loni Love | Marge | 5 |
| Harrison Thomas Boxley | Sidney Doyle | 4 |
| Katherine McNamara | Claire | 3 |
| Rachel Cannon | Bethany Applebaum | 3 |
| Sean Ryan Fox | Timmy | 3 |
| Eric Tiede | Izzy Gunnar | 3 |
| Peter Oldring | Lonnie | 3 |
| Veronica Dunne | Taylor | 3 |
| Scott Dunn | Prince Uval | 3 |
| Oana Gregory | Mika | 3 |
| Kaylee Kaneshiro | Tori | 2 |
| Sydney Sweeney | Kelsey Vargas | 1 |
| Cooper Barnes | Vance | 1 |
| Braden Fitzgerald | Jesse | 1 |
| Joel McCrary | Biker Dummy | 1 |
| Tristin Mays | Vanessa / M.C. | 1 |
| Jack Griffo | Benny | 1 |
| Kaylee Kaneshiro | Carrie | 1 |
| Austin North | Ricky Weaver | 1 |
| Booboo Stewart | Carson Hunter | 1 |
| Brennan Mejia | Zane | 1 |
| Carlon Jeffery | Matt | 1 |
| Bruno Amato | Benny the Blade | 1 |
| Dan Ahdoot | Falafel Phil / Phyllis | 1 |
| Dan Ahdoot | Falafel Phil / Imposter Phil | 1 |
| Dan Ahdoot | Phil | 1 |
| Madalyn Horcher | Nikki | 1 |
| Kelli Berglund | Sloane Jennings | 1 |
| Eddie Pepitone | Lou | 1 |
| Kaiwi Lyman | Snake | 1 |
| Reed Alexander | Truman | 1 |
| Kofi Sarkodie-Mensah | Kofi Kingston | 1 |
| Gunnar Sizemore | Walt | 1 |
| Paul Zies | Dwayne | 1 |
| Matt Mullins | Trent Darby | 1 |