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.
|Episode #||Title||Original air date||Prod. Code|
|41||"Teacher's Pet / Opossum Man"||June 1, 2013||301|
|Teacher's Pet: Eric has to dodge Pamplemoose if he wants to join the gang at their new school.|
Opossum Man: Eric's old pal returns as a rodent.
|42||"Black Top, Dark Matter / Master XOX Ray Vision"||June 8, 2013||302|
|Black Top, Dark Matter: Eric goes on a dangerous mission.|
Master XOX Ray Vision: Eric tries contact lenses.
|43||"Oh Trevor, Where Art Thou? / XOX to be You"||June 15, 2013||303|
|Oh Trevor, Where Art Thou?: Trevor goes missing on a camping trip|
XOX to be You: Master XOX creates a weapon.
|44||"Eric and the Maxum Brain Factory / Trip Van Twinkle Toes"||June 22, 2013||304|
|Eric and the Maxum Brain Factory: Maxum Brain returns to meet his maker.|
Trip Van Twinkle Toes: A dancing supervillain enslaves the town.
|45||"Pains, Sprains, and Maxum Mobiles / Maxum Men"||June 29, 2013||305|
|Pains, Sprains, and Maxum Mobiles: Eric and Trevor go for a ride in the new Maxum mobile.|
Maxum Men: Maxum Brain tells the story of his secret past.
|46||"Hullaballoo / For Real Estate"||July 6, 2013||306|
|Hullaballoo: Vana challenges her sister.|
For Real Estate: Eric accedentally sells the mansion to villains.
|47||"Multimaker / A XOX for Good"||July 13, 2013||307|
|Multimaker: Eric clones himself.|
A XOX for Good: XOX reveals a univerese with good villains and bad heroes.
|48||"The Dingalingish Patient / Parent Teacher Night of Doom"||July 20, 2013||308|
|The Dingalingish Patient: A villain takes advantage of Eric's guilt.|
Parent Teacher Night of Doom: A sidekick's nightmare becomes true.
|49||"Eric on Board / Pamp My Ride"||July 27, 2013||309|
|Eric on Board: Eric becomes chairman of the mansion.|
Pamp My Ride: Eric and Trevor customize Pamplemoose's ride.
|50||"Oppoxox / Walter Ego Presents: Vapo House"||August 24, 2013||310|
|Oppoxox: Master XOX wants to be a good guy.|
Walter Ego Presents: Vapo House: the gang star on a reality show.
|51||"The Running of the Trolls / Superbest in Show"||September 7, 2013||311|
|The Running of the Trolls: The town battles trolls.|
Superbest in Show: Eric and Maxum Mutt compete in a pet show.
|52||"Those Who Can't Teach / Graduation Daze"||September 14, 2013||312|
|Those Who Can't Teach: Professor Pamplemoose gets fired.|
Graduation Daze: Graduation day at the Academy. Series Finale