OK K.O.! Let's Be Heroes Crossovers
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Let's (Not) Be Smashers by Latias425 reviews
On a normal day in Lakewood Plaza Turbo, K.O. finds a strange letter which is an invitation for him to come to a fighting tournament called Super Smash Bros. Upon arriving at the Smash Mansion however, things start to get really crazy as when Master Hand finds out who has come to the tournament, he forms an ensemble to try to get K.O. out since cartoon characters can't be in Smash.
Crossover - Super Smash Brothers & OK K.O.! Let's Be Heroes - Rated: T - English - Adventure/Parody - Chapters: 24 - Words: 46,079 - Reviews: 11 - Favs: 24 - Follows: 20 - Updated: 5/28/2020 - Published: 5/22/2018 - Samus A., K.O., Carol, TKO
Team up Dueling by Determined Artist reviews
Astral floated around following Yuma with Kotori and Bronk followed be hind them, during Duel recess. The group soon find a pair of twins that need help.
Crossover - Yu-Gi-Oh! ZEXAL & OK K.O.! Let's Be Heroes - Rated: K+ - English - Friendship - Chapters: 1 - Words: 1,092 - Reviews: 1 - Favs: 5 - Follows: 4 - Published: 5/6/2020 - Yuma T., Astral, K.O., TKO - Complete
The Origin of WordGirl! by ImGonnaWriteAFanfic
This is how WordGirl was started!
Crossover - WordGirl & OK K.O.! Let's Be Heroes - Rated: K - English - Adventure - Chapters: 1 - Words: 132 - Favs: 1 - Follows: 1 - Published: 3/3/2020 - WordGirl/Becky B., Lord Boxman - Complete
OK Steven Lets Be Heroes! by IamPancakeSatan666 reviews
Steven Universe meets KO, a kid who just so happens to know Garnet! Meanwhile, Lord Boxman is cooking up a plan to get rid of KO, but will Steven protect KO?
Crossover - Steven Universe & OK K.O.! Let's Be Heroes - Rated: T - English - Humor/Adventure - Chapters: 1 - Words: 196 - Reviews: 1 - Favs: 7 - Follows: 7 - Published: 3/2/2020 - Steven U., K.O.
Unikitty's Love Story! by ImGonnaWriteAFanfic reviews
Unikitty is in love with Enid but how can she show it?
Crossover - OK K.O.! Let's Be Heroes & Unikitty! - Rated: K - English - Romance - Chapters: 1 - Words: 128 - Reviews: 2 - Published: 2/5/2020 - Enid, Unikitty - Complete
OK KO - Episode 925 - It's Time for a Death Battle! by dragonlordIV reviews
After the events of Dark Plaza, KO finds a mysterious box labeled 'Death Battle' at his front door. Join KO, Rad, and Enid, as well as guest stars from OK K.O. , as they watch the violent game show Death Battle.
Crossover - Web Shows & OK K.O.! Let's Be Heroes - Rated: M - English - Humor/Parody - Chapters: 2 - Words: 2,757 - Reviews: 7 - Favs: 28 - Follows: 25 - Published: 2/3/2020
One Glorb Makes A Difference by Determined Artist reviews
After Dr. Chioptle Jr. captured Puma Loco and White Pantera Manny and Frida was left no choice, but to run to Manny's house. There Frida suggested that he should use this glowing ball that's been called a Glorb. The only problem is that no one in the city knows what it dose.
Crossover - El Tigre & OK K.O.! Let's Be Heroes - Rated: T - English - Humor - Chapters: 1 - Words: 432 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 1/16/2020
Steven's story- Battle for Amazon by Toasty Coatimundi reviews
Steven must get allies when The Crystal Gems where defeated by Necrozma in the Amazon Rainforest. Time is ticking when the forest is at stake and KO must unleash the wrath of the Titans. This is part of the Rift- alpha and omega like KO's story- love and appreciation
Crossover - Steven Universe & OK K.O.! Let's Be Heroes - Rated: K+ - English - Adventure/Fantasy - Chapters: 19 - Words: 45,914 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 1/9/2020 - Published: 12/19/2018
OK KO! Let's Meet Sailor Moon by DragonMasterWarrior reviews
When chaos strike at Lakewood Plaza Turbo, it's up to KO and the Sailor Scouts to stop the evil threatening everyone around them. Will they succeed? Or will they perish?
Crossover - Sailor Moon & OK K.O.! Let's Be Heroes - Rated: T - English - Adventure/Friendship - Chapters: 3 - Words: 2,308 - Reviews: 2 - Favs: 7 - Follows: 5 - Updated: 11/19/2019 - Published: 11/5/2019 - Usagi T./Serena/Bunny/Sailor Moon, Sailor Senshi/Sailor Scouts, K.O.
OK KO - Let's Trick or Treat! by G-Pool
It's Halloween at Lakewood Plaza Turbo! Things get out of hand when a sociopath rears his head into all the fun.
Crossover - Halloween & OK K.O.! Let's Be Heroes - Rated: K+ - English - Adventure/Humor - Chapters: 1 - Words: 2,242 - Favs: 3 - Follows: 2 - Published: 10/15/2019 - D. Loomis, Michael M., Enid, Mr. Gar - Complete
Heros and villains unite by beninator5 reviews
KO learns that a new threat has emerge and wants to wipe out all the heroes and villains in the cn muilti-verse so he has to team up with the evil black hat to save it.
Crossover - Villainous & OK K.O.! Let's Be Heroes - Rated: K+ - English - Humor/Adventure - Chapters: 3 - Words: 562 - Reviews: 2 - Favs: 1 - Follows: 2 - Updated: 10/14/2019 - Published: 10/7/2019
Turbo, your Fellow by Frozarburst reviews
After a devastating attack on Lakewood, T.K.O. awakens to find himself separated somehow from K.O, who had been killed in the attack. With nowhere else to go, Turbo must ally himself with Dendy and Fink to escape the corrupted plaza. This is a crossover fanfic taking place at the start of Toon Wars: The Final Days. See the official T.K.O. Rules for more!
Crossover - Cartoon X-overs & OK K.O.! Let's Be Heroes - Rated: T - English - Hurt/Comfort/Mystery - Chapters: 4 - Words: 11,523 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 9/28/2019 - Published: 8/14/2019 - Fink, Professor Venomous/Shadowy Figure, TKO, Dendy - Complete
OK KO: Resurrection F by PerkyGoth14 reviews
The adventure group ends up in Lakewood Turbo Plaza and meet a young boy by the name of KO who seems to be a fan of their work. The plaza then has to make a delivery over to Capsule Corp much to Atticus's delight and it's Lionel's turn to visit the world of Dragon Ball Z to meet his fighting mentor, Goku, but trouble brews when Frieza comes to challenge the Saiyan.
Crossover - Dragon Ball Z & OK K.O.! Let's Be Heroes - Rated: T - English - Friendship/Drama - Chapters: 7 - Words: 19,398 - Reviews: 1 - Favs: 14 - Follows: 10 - Updated: 9/18/2019 - Published: 9/16/2019 - Goku, Vegeta, Frieza, K.O. - Complete
Noble heart by SUPER M.V2015 reviews
Rad and Enid are under the mental control of Boxman and K. Or will have to go rescue them, but after knowing that all Boxman's robots are in the factory, he needs the help of a hero whose shield is a heart. This fanfic contains Spanglish. New Cover Image created on April 27, 2020 made by me.
Crossover - El Chapulín Colorado & OK K.O.! Let's Be Heroes - Rated: K+ - English - Adventure - Chapters: 1 - Words: 2,845 - Reviews: 2 - Favs: 5 - Follows: 2 - Published: 9/15/2019 - Rad, Enid, K.O. - Complete
The Unexpected Crossover by Persikitty reviews
This is a continuation of 'What Might Have Been' What happens when an unexpected force appears and brings Rad, Nebula, Ko, Enid, and the gang to a strange, new, unfamiliar place, New York! How will the gang defeat this new enemy? Find out in 'The Unexpected Crossover!
Crossover - Night at the Museum & OK K.O.! Let's Be Heroes - Rated: T - English - Romance/Fantasy - Chapters: 10 - Words: 17,168 - Reviews: 6 - Favs: 2 - Follows: 1 - Updated: 9/1/2019 - Published: 6/30/2019
OK KO Lets Go Beyond by NegaBoss2000
When the ancient powers of a world travelling relic are threatened, K.O, Rad, Enid and Dendy will team up together to save the day. Joining them on their adventures are Elodie, a confused robot called Longarm, K.O's Father, Laserblast and a great many other heroes from alternate worlds. Together, they must face off against villains who plan to claim the relic for their own gain.
Crossover - Cartoon X-overs & OK K.O.! Let's Be Heroes - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 1 - Words: 221 - Favs: 6 - Follows: 4 - Published: 8/16/2019 - Rad, Enid, K.O., Dendy
Wilhamena and Dynasti's Best Halloween Party Ever by Dynasti2002 reviews
It's a Halloween party, and you are invited. When Bernard, Icky and Boris were gone, Wilhamena and Dynasti decided to host a brand new spooky Halloween party. But when the fun begins, things seem to take a normal turn, until Bernard is coming.
Crossover - Misc. Cartoons & OK K.O.! Let's Be Heroes - Rated: T - English - Family/Fantasy - Chapters: 1 - Words: 1,655 - Reviews: 1 - Follows: 1 - Published: 8/8/2019 - Complete
Everybody dance by Pinkflamingwarriorofjustice reviews
This is my version of everybody sing, in the form of an idea I've had which is called ok unikitty the musical. which is now on the fanfic world for all to see if any of you are insersted in reading it too pals. Also it's just an idea and not a real fanfic story either wayness too pals.
Crossover - OK K.O.! Let's Be Heroes & Unikitty! - Rated: K+ - English - Humor/Poetry - Chapters: 1 - Words: 247 - Reviews: 1 - Published: 6/25/2019 - Dr. Fox - Complete
Ok unikitty the musical by Pinkflamingwarriorofjustice
This is my version of a would be crossover musical between two shows I like and the freaking pilot for itness too pals.
Crossover - OK K.O.! Let's Be Heroes & Unikitty! - Rated: K+ - English - Poetry/Humor - Chapters: 1 - Words: 239 - Published: 6/25/2019 - K.O., Mr. Gar, Dr. Fox, Hawkodile - Complete
Lost and Found by FanfictionNerdLikesFanfiction reviews
K.O is once again back in Nexus. Where He meets Craig and Victor who he teams up with to save this place. They also meet Adorabat and Garnet again!
Crossover - Craig of the Creek & OK K.O.! Let's Be Heroes - Rated: K+ - English - Mystery/Friendship - Chapters: 1 - Words: 317 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 6/12/2019 - K.O., Craig W.
(As Per Request) Interactions by SneaselXRiolu reviews
OK K.O. characters meeting Steven Universe characters. I wonder how this will play out?
Crossover - Steven Universe & OK K.O.! Let's Be Heroes - Rated: K - English - Humor/Friendship - Chapters: 5 - Words: 1,556 - Reviews: 12 - Favs: 11 - Follows: 9 - Updated: 3/16/2019 - Published: 9/19/2018 - Steven U., K.O.
OK Louds, Lets be pals by Gold Cartoonist reviews
KO and Dendy go to Royal Woods so Dendy can complete her school report and so KO can find something fun to do. Upon their arrival, the duo becomes friends with Lincoln and his sisters. (One-shot)
Crossover - Loud House & OK K.O.! Let's Be Heroes - Rated: K+ - English - Friendship/Humor - Chapters: 1 - Words: 10,491 - Reviews: 5 - Favs: 10 - Follows: 5 - Published: 1/20/2019 - Complete
In a Dimension of Heroes and Villains by Ybarra87 reviews
Marco had just got done watching the Soulrise with Kelly yet his talk with Tad was still bothering him. Deciding to go to a place where no one knew him, he ended up right in a dimension where heroes and villains live. This is just a one shot. I don't own anything belonging to SVTFOE or OK K.O.! Let's Be Heroes.
Crossover - Star Vs. The Forces of Evil & OK K.O.! Let's Be Heroes - Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 26,532 - Reviews: 5 - Favs: 26 - Follows: 19 - Published: 11/10/2018 - Star B., Marco D., Hekapoo, K.O. - Complete
Once a Hero Always a Hero by Ybarra87 reviews
The Nasty Burger explosion happened taking everyone he cared about away from him. Seeing no other option Danny decided the best way to stop Dan was taking both of them out. However just before Danny could fade away Clockwork saves him with an offer ready. This is just a one shot. I don't own anything belonging to Danny Phantom or OK K.O.! Let's Be Heroes.
Crossover - Danny Phantom & OK K.O.! Let's Be Heroes - Rated: T - English - Drama/Adventure - Chapters: 1 - Words: 13,842 - Reviews: 7 - Favs: 40 - Follows: 31 - Published: 10/18/2018 - Danny F., Dani, K.O. - Complete
Nexus Hunt (Transcript) by WhatsLoveButASecondHandEmotion reviews
A transcript of the deleted scene from "Crossover Nexus".
Crossover - Aliens/Predator & OK K.O.! Let's Be Heroes - Rated: K - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 796 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 10/14/2018 - Predator/Yautja, K.O. - Complete
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