The third and final season of Sidekick was broadcast from June 1, to September 14, 2013. It contained 12 episodes, bringing the series a total of 52 episodes.
Episodes[]
| Episode # | Title | Original air date | Portugal air date | Prod. Code |
|---|---|---|---|---|
| 41 | "Teacher's Pet / Opossum Man" | June 1, 2013 | July 1, 2019 | 301 |
| 42 | "Black Top, Dark Matter / Master XOX Ray Vision" | June 8, 2013 | July 2, 2019 | 302 |
| 43 | "Oh Trevor, Where Art Thou? / XOX to be You" | June 15, 2013 | July 3, 2019 | 303 |
| 44 | "Eric and the Maxum Brain Factory / Trip Van Twinkle Toes" | June 22, 2013 | July 4, 2019 | 304 |
| 45 | "Pains, Sprains, and Maxum Mobiles / Maxum Men" | June 29, 2013 | July 5, 2019 | 305 |
| 46 | "Hullaballoo / For Real Estate" | July 6, 2013 | July 8, 2019 | 306 |
| 47 | "Multimaker / A XOX for Good" | July 13, 2013 | July 9, 2019 | 307 |
| 48 | "The Dingalingish Patient / Parent Teacher Night of Doom" | July 20, 2013 | July 10, 2019 | 308 |
| 49 | "Eric on Board / Pamp My Ride" | July 27, 2013 | July 11, 2019 | 309 |
| 50 | "Oppoxox / Walter Ego Presents: Vapo House" | August 24, 2013 | July 12, 2019 | 310 |
| 51 | "The Running of the Trolls / Superbest in Show" | September 7, 2013 | July 15, 2019 | 311 |
| 52 | "Those Who Can't Teach / Graduation Daze" | September 14, 2013 | July 16, 2019 | 312 |