Leo along with Maylene (Pokemon), Chris Redfield (Resident Evil), Sir Daniel Fortesque (Medievil), Seiya (Saint Seiya), Fumikage Tokoyami (MHA), Tom Hardy/Venom, Twilight Sparkle (MLP), Timon and Pumbaa (The Lion King), Shiro, Lance and Pidge (Voltron), Lucina and Robin (Fire Emblem), Captain Falcon (F-Zero), Samurai Pizza Cats Trio, Lucas (Mother 3), Gon Freecss (Hunter x Hunter), Yusuke Urameshi (Yu Yu Hakusho), May and Max (Pokemon), Lion-O, Cheetara, Wilykit and Wilykat (Thundercats) are outside from the Professor Kirke's house.
"I'm trying to wonder what are we doing here?" Max (Pokémon) asked.
"Here's where the Pevensie children live there being safe and away from the Second World War." Leo answered.
"Let me clear myself, we are in a world where an event of the real life took place here?" Tom Hardy guessed.
"Yes." Leo answered.
"A detail about the Second World War is about the atomic bomb in Hiroshima, Nagasaki in Japan." Yusuke said.
"Well, we faced many wars before." Robin said.
"We watched a war before through the Time Flowers." May said (remembering the events of Pokémon: Lucario and the Mystery of Mew).
"In my case, in Equestria there was wars between the pony tribes, the earth ponies, unicorns and pegasi, the three of them fight for territory and were easy target of the Windigos, only living in harmony was the way to drive the Windigos away." Twilight said, remembering the tale of the Heart Carol.
"By now everything seems peaceful here." Gon said.
"It's true but we must stay clear." Chris R said.
"Also, there's an upcoming war on Narnia." Leo said.
But suddenly they heard a darkness manifesting.
"I think we're not alone...!" Seiya said as he activated his saint armor.
The darkness took the form of darkish yellow lion-like Heartless with the Heartless Emblem on his back and roared at the group.
"Why had to be a lion?" Timon asked.
"It's just a Heartless, based from the Leo constellation." A voice said as they turned to see a gray weasel wearing blue pants, black shoes, yellow jacket and red beret and said weasel is in company of an orange elephant wearing a black jacket.
"Who are those weirdoes?" Tokoyami asked.
"Weirdos aren't our names, I'm Stan Wozzle and he is Heff Heffalump." The weasel named Stan Wozzle said before telling the viewers. "Luckily this is best than the Twisted Childhood Universe."
"Tell me, what are you two doing here?" Lion-O asked them.
"Well, we were..." Heff was saying.
"We were recently recruited and summoned Ravenger Heartless for the lio boy." Stan Wozzle.
"The name's Leo Astra and don't forget it." Leo told as he pointed his sword.
The others prepared their weapons while May called Blaziken and Maylene called Lucario, Tom Hardy transformed into Venom.
"Well, we'll wait for the right moment to attack." Timon said and Pumbaa nodded.
The Ravenger Heartless roared before attacking with rammings, clawing and biting but they managed to dodge the attacks, Maylene's Lucario attacked with Force Palm and Aura Sphere, Chris R tossed a flash grenade and fired his shotgun, Sir Daniel swung his axe, Seiya used Pegasus Meteor, Tokoyami used Black Shadow to attack, Venom performed Venom Web and casts a web that covers the whole screen and does a series of melee attacks ending with a Venom Fang against the Ravenger Heartless, while they are fighting Stan Wozzle and Heff are trying to enter the mansion.
"This could be our chance and then..." Stan Wozzle said but suddenly Max's Mightyena was there growling at them.
"Nice doggy..." Heff said, shivering.
"He is a hyena...!" Stan Wozzle, said but also shivering.
Back with the Ravenger Heartless, Speedy threw some Ninja Fireballs, Guido threw his Magical Umbrella like a boomerang, Polly threw an Energy Boomerang, Lucas (PK user) used PK Thunder on himself to hit the Heartless, Gon used Janjaken Scissor while Yusuke used Spirit Gun, May's Blaziken used Blaze Kick and Sky Uppercut, Lion-O used his sword to slash the Ravenger, Cheetara attacked by swinging her bo-staff, Wilykit and Wilykat tossed grenades, Twilight uses Mystical Fire, Shiro uses Ephemeral wings, Lance uses Ice Ray, Pidge uses Vine Cannon,Lucina and Robin swinging their swords hitting the Heartless, Captain Falcon using Falcon Kick and Falcon Dive Leo performed Jump Strike damaging greatly the Heartless.

"I'll finish this! Blaziken, Mega Evolve!" May said, using her Key Stone and Blaziken became Mega Blaziken.
Then Mega Blaziken used Gatling Flame Kicks which first kicks the Ravenger Heartless before performing an upper kick sending it to the air, Mega Blaziken used Flare Blitz to propulse herself and ended with a High Jump Kick and caused an explosion in midair, the Ravenger Heartless roared in agony and then disappeared when the glowing heart was released.
"That was easy." Lucas said.
"Not for so long..." Stan Wozzle said before launching yarn which wrapped most of the team members except for Leo. "Maybe the hyena for that meddling kid didn't allow us to enter but still we have the advantage, this yarn was gift of Puppetmon."
"Release them!" Pumbaa said as the two villains turned to see him.
"Hey. Who's the pig?" Stan Wozzle asked.
"Are you talking to me?" Pumbaa asked, feeling offended.
"Uh oh. He called him a pig." Timon said.
"Are you talking to me?!" Pumbaa repeated.
"Shouldn't have done that." Timon replied.
"ARE YOU TALKING TO ME?!" Pumbaa asked, louder.
"Now they're in for it." Timon said.
"THEY CALL ME... MISTER PIG!" Pumbaa said before yelling and charging towards Stan Wozzle and Heff sending them both to the skies just like Team Rocket Trio.
"You yellow belly!" Pumbaa said before he and Timon start the Arsenio Hall "Ooh, ooh" chant.
"Well, we won." Leo said as he released everyone.
"It's hard to believe that Leo actually a prince since his grandfather is the king of Astra's Kingdom." Wilykit said.
Meanwhile, very far away from the heroes, Radec, Duke Ightorn, Grimmjow, Jadis the White Witch and Kay heard them and also watched them.
"Looks like the two new ones failed." Duke Ightorn said.
"The Heartless was also defeated." Grimmjow added.
"Unless we got extra information." Radec said.
"The grandfather of Leo is a king, meaning that the Leo Warrior is a prince." Jadis said with interest.
"Now the things got interesting." Kay said.