Characters found in OK K.O.! Let's Be Heroes.
- Lakewood Plaza Turbo
- Main Heroes Click to Expand K.O., Enid, Radicles "Rad", Carol, Mr. Gar, Dendy, Turbo K.O.
- Lakewood Plaza Heroes Click to Expand Gar's Bodega (Gary, Ms. Mummy, Baby Teeth) Fitness (Dojo Carol, Gertie, Ginger, Gladys), The Cool Teens (Red Action, Drupe, Gregg), The Rad Squad (Mega Football Baby and Bell Beefer), iFrame Outlet (Sir eFram iFrame, A Real Magic Skeleton, Brandon), Logic Cuts (Mr. Logic), Burrito Beardo (Beardo).
- Other Heroes Click to Expand Lakewood Plaza Frequenters (Punching Judy, Pird, Nick Army and Joff the Shaolin Monk, Colewort, Potato, Crinkly Wrinkly, Chameleon Jr. and Sr., Ted Viking and Foxy, Neil, Shy Ninja, Mad Sam, Skateboard Nerd, Sparko, Lion Cat, Co-Bruh, URL, Cookie Man, Calopo, Holo-Jane, Glitter Starlight, Puck Reverie), Other Heroes (Cool Sun AKA The Sun, Wally the White, Joe Cuppa, Gnarlio, Peej, and Chill Cat, Cupid, Teamster, Bomber Fan, Combo Breaker, Sonic the Hedgehog, Miles "Tails" Prower), Families (Pavel and Pepelina, Ofrang and Theodosia, Bernard and Wilhamena, Boris and Icky), RPG World (Hero, Cherry, Spaghetti), The Planeteers (Captain Planet, Kwame)., ACTION NEWS (The Big Cheese, Dynamite Watkins, Cam), Pow Card Industries (Mr. Cardsley, Carla), Hue Troops (Ren Bo, Blue Power, Yellow Technique, Black Strategy, Green Guts), Lakewood Public School (Miss Quantum, Nanini, Genesis, Bobo), CN City (Ben Tennyson/Ben 10, Four-Arms, Raven, Garnet).
- Villains
- Box More Click to Expand Lord Boxman, Fink, Darrell, Ernesto, Shannon, Jethron, Raymond, Mikayla, Boxman Jr., Jethro 2.0, Metal K.O.
- Other Villains Click to Expand Vormulax, Succulentus, Cosma, Billiam Milliam, Billiam Milliam's Minion and Bodyguards, Galgarion, Dr. Blight, Dr. Weak Point, Big Bull Demon, Cantalop, Hon Dew, Wat Mel, and Nappa.
- P.O.I.N.T. and P.O.I.N.T Prep Academy
- P.O.I.N.T. Click to Expand P.O.I.N.T. (Foxtail, Doctor Greyman, Silver Spark, El-Bow, Rippy Roo) P.O.I.N.T Prep Academy (Elodie, Miss Pastel, Koala Princess, Sparko, Demon Queenie, Phoebe, Purrcival, Biki, and Sunshine.)
