She-Ra and the Princess of Power Crossover

The Barnoitiness's backstory

Adora, Catra, Bow, Glimmer, and Zuri's group were on route to their base. Adora was updating someone on her transmitter. 

Adora: Yes, we have them with us, and we're on our way to base. 

???: Good. Make sure you show them around when you get there.

Adora: Understood. Over and out. 

Bow: Oh man, you guys are gonna love the base. It's got all kinds of awesome things to do!

All Might: Does it have a training gym? 

Catra: Heh, it sure does!

Silver: Alright! 

Shantae: So, what's the deal with the Baronitiness and the Alavan Buggers? 

Glimmer: Nobody knows, but they were founded a long time ago. The Baronitiness is the most dangerous out of the group. He's from an alternate universe where he grew up thinking his choices could help change the world. He graduated from Sophie of Woods Beyond, where they taught him everything they know about world domination. After his graduation ceremony, at some point, he came across the Alavan Buggers. They told him they needed a good leader to lead them. Using the knowledge he learned from his school days, he's lead the group to victories they desired. Not only that, but he's misusing Pokemon. He's conducted experiments on them and he even has a group of Greninja as loyal henchmen. He's trained them well enough to protect their base from introdures. He's also a highly trained professional at hand to hand combat. He's trained his entire life to take down anyone who stands in his way. As long as those loyal henchmen stay close to him, he's gonna continue ruling the galaxy. If he gets his wish and takes over the multiverse, he'll be unstoppable.

Smg4: How long has he been at large?

Catra: Far too long. The police have tried everything they could to bring him in, but he manages to outsmart them every time. So, it's up to us to find him and bring him to justice.

Adora: We fought him multiple times, but each time we battled him, he always overpowered us with the help of his Greninja and his henchman. He taunts us every time we lose. So we've been gathering heroes from different universes and dimensions to help us stop him.

Sunset: Well, we're willing to help you fight him.

Goku: Yeah, we punish evil doers wherever we go!

Shantae: Zuri's group has never met a problem they can't solve!

Bow: Alright!

Glimmer: Awesome!

Catra: I knew you'd join us once you heard his backstory!

Adora: So, shall we continue with his backstory?

Silver: Since we're going up against him, yes!

Adora: The Greninja he's trained are ready to strike any intruder who steps into their base. You never know where they could be. They could be hiding in the shadows, waiting to strike from above.

Bow: I learned that first one the hard way.

*Flashback begins*

Bow was sneaking around in the computer room, collecting data. He's seen talking to someone on his transmitter.

Bow: Yep, I'm in the computer room collecting the data we need.

???: Good, just make sure you're not being watched. Those Greninja could be anywhere.

Bow: Don't worry, I managed to avoid them on the way here and-

Something rushes past Bow and the door slightly opens, temporary freaking him out. His eyes widen.