Episode 1
We Are Heroes
11m
KO struggles with his upgraded role as a member of the hero team.
Where to watch OK K.O.! Let's Be Heroes
TV series
OK K.O.! Let's Be Heroes
20173 seasons8.0 / 10
Let's start the show!
Animated comedy set in the futuristic year of 201X, where the world is populated by video game and manga-esque characters.
Streaming, rental and purchase options
Where to watch in United States
Checked Jul 22, 2026
You can also rent or buy it from Google Play, Amazon, Apple TV, and Fandango at Home. Use the direct links below to open the provider.
Synopsis
Animated comedy set in the futuristic year of 201X, where the world is populated by video game and manga-esque characters.
Season 3 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
KO, Rad, and Enid!
11m
When confronted with their lack of a team gimmick, KO, Rad, and Enid wonder what their group identity should be.
Where to watch OK K.O.! Let's Be Heroes
Episode 3
TKO Rules!
11m
KO and TKO decide to swap places for the day.
Episode credits
Guest stars SungWon Cho
Episode 4
Chip's Damage
11m
Elodie enlists KO to help figure out what to do about Chip Damage.
Where to watch OK K.O.! Let's Be Heroes
Episode 5
K.O. vs Fink
11m
When Fink taunts KO for being a momma's boy, he grapples with newfound insecurity about it.
Where to watch OK K.O.! Let's Be Heroes
Episode 6
The K.O. Trap
11m
KO, Rad, and Enid are caught in an especially devious trap.
Where to watch OK K.O.! Let's Be Heroes
Episode 7
Whatever Happened to... Rippy Roo?
11m
Rippy Roo visits the plaza.
Where to watch OK K.O.! Let's Be Heroes
Episode 8
Planet X (1)
11m
When Rad returns to his home planet, he learns a shocking truth about alien society.
Where to watch OK K.O.! Let's Be Heroes
Episode 9
Deep Space Vacation (2)
11m
When Gar lets KO and Enid take a vacation to outer space, they get more than they bargained for.
Where to watch OK K.O.! Let's Be Heroes
Episode 10
Let's Meet Sonic
11m
When world-class hero Sonic the Hedgehog visits the plaza, he teams up with KO to save the day.
Episode credits
Guest stars Roger Craig Smith, Colleen O'Shaughnessey
Episode 12
Radical Rescue
11m
Rad is forced to reconsider his identity when KO starts taking on some of his traits.
Where to watch OK K.O.! Let's Be Heroes
Episode 13
Let's Get Shadowy
11m
KO teams up with an unlikely ally to take on an old foe.
Where to watch OK K.O.! Let's Be Heroes
Episode 14
You're A Good Friend, KO
11m
KO brings Dendy along for a hero mission in order to cheer her up.
Where to watch OK K.O.! Let's Be Heroes
Episode 15
Red Action 3: Grudgement Day
11m
KO and Enid attempt to prevent a mysterious power battle between Rad and Red Action.
Where to watch OK K.O.! Let's Be Heroes
Episode 16
Carl
11m
A pleasant weekend goes awry when a monster attacks.
Where to watch OK K.O.! Let's Be Heroes
Episode 17
Dendy's Video Channel (1)
11m
Dendy tries to update KO's Video Channel for him, but has trouble finding something to post.
Where to watch OK K.O.! Let's Be Heroes
Episode 18
Let's Fight to the End (2)
11m
When a fighting tournament is announced at the Plaza, there is more at stake than meets the eye.
Where to watch OK K.O.! Let's Be Heroes
Episode 19
Thank You for Watching the Show (3)
11mfinale
When KO finds moments of his life slipping by, he begins to suspect something weird is going on.
Where to watch OK K.O.! Let's Be HeroesEpisode information updated Jul 24, 2026
More about OK K.O.! Let's Be Heroes
Cast
Courtenay TaylorK.O. (voice)
Kate FlanneryCarol (voice)
Jim CummingsLord Boxman
Ashly BurchEnid (voice)
Ian Jones-QuarteyRad (voice)
David HermanMr. Gar (voice)
Roger Craig SmithSonic the Hedgehog
Colleen O'ShaughnesseyMiles "Tails" ProwerCredits
- Created by
- Ian Jones-Quartey
- Written by
- Parker Simmons, Ryann Shannon, Dave Alegre, Danny Ducker, Geneva Hodgson, Haewon Lee, Stevie Borbolla, Mira Ongchua
Production details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 108
- Original language
- English
Networks & production
Cartoon NetworkUnited States
YouTube
Cartoon Network StudiosUnited States
Themes
adoringanime inspiredappreciativeapprovingawestruckchild protagonistcomfortingcomplex
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