AU Bio:

A Swapped Stories AU where the cast of the Bakugan reboot and Metalions go through each other's adventures. The Metalions and the Bakugan exchange places as well, although their teams still remain the same. 

BBP Characters:

1. Uju (takes Dan's place)

Uju is a Pyrus Brawler, and he has Leo and Aries [both are Pyrus] as his main teammates. He is one of the youngest members of the team, although he tries to make up for it and fails sometimes. He is also great with inventions and keeps the group together as the glue. He's the first one to be partnered with a Bakugan. After the mess connected to R, Uju begins to question his gender, and eventually identifies as gender nonconforming.

2. Beom (takes Benton's place, and later on Lightning's place)

Beom is a Darkus Brawler who has Darkus Sabertooth and Aquos Direwolf as his partners. While quite cold and distant at first, even being downright antagonistic, it's only because of the influence Sigma had on him. Eventually, he is broken out of it and helps the kids with their problems. He also becomes a member of their team, and begins to fit into their weird dynamics. 

3. Taesan (takes Shun's place)

Taesan is an Aquos brawler who has Ventus Argentavis and Aquos Scorpio as his partners. While a bit of a glutton, Taesan cares a lot for his friends, and will even stand up for them against his mom and dad who want the perfect heir for their company. He's also a proficient brawler when not joking around with Argentavis and Scorpio. 

4. Sinae (takes Lia's place)

Sinae is a Ventus Brawler with Ventus Giant Elk and Ventus Mammoth in her team. While fashion conscious and a great musician, Sinae is straightforward and righteous in her own way, although she does tend to act like a spoiled brat. She also tends to let her temper get the better of her, but she is smart and can get herself out of a sticky situation.

5. Noeul (takes Wynton's place)

Noeul is a Haos-Ventus Brawler with Haos Ursa and Ventus Taurus as partners. As the brains of the group, Noeul keeps a level head during brawls, but he's also the second strongest in the group after Uju, knowing his way around the battlefield well. However, he has a deep sense of insecurity, and it shows when he can't evolve his Bakugan which affects him mentally. It's only through his friends that he can finally evolve, and he continues to do his best, winning the first Bakugan Battle League.

6. Young (takes Ajit and Philomena's places)

Young is an Aurelus Brawler with Aurelus Uluru and Aurelus Sigma as his partners. He first appears in flashbacks for Beom and Uju, being referred to as Young or Grandpa in those flashbacks before making his official debut as an employee at Sigma Corp. Since he wore glasses at the time the two don't recognise him until he returns to help them fight Sigma to protect the Great Core Cell. After that, he goes on the run and joins them shortly after R shows up, ready to help them in their battle. Young is a kind person with a knack for inventing, although most of his inventions tend to explode on people, as the Eco-Team were to find out. 

7. Sigma (takes Tiko's place)

Sigma is a Bakugan who wants to take over Vestroia and Earth, using whatever means necessary in order to create a dystopian world of mayhem and destruction where he rules supreme with all the power. Because of this, his main opposition comes in the form of the Eco-Team, who knows he plans to drain the world of its Vestroia energy, which would kill the earth due to how integrated the two planets had become. However, he was soon defeated, and was taken down before recuperating in the Maze. When R tries to revive him, he refuses to join the other side and teams up with Young instead to take him down.

8. Suho (takes Dan's place as a leader)

He's the one who helps the team through most difficulties they face. Despite not having a Bakugan partner, the team doesn't leave him out and they include him most of the time. His own insecurities are used by R to make him agree to join his side, but soon his team snaps him out of it. An optimist and nature lover, Suho does his best in everything he does. While working with R, he is given his Peacock Bakugan, Vanity, and fights against them until they come after him and fight him with their own Bakugan, which allows him to continue becoming a member of their team after Vanity is called back. He may seem goofy but Suho loves the kids a lot and would fight for them.

9. R (takes Storm, Haavik and Reed's places)

R has been wounded so much growing up, and feels anger towards the world for what they've done to him, which led to his obsession with creating mayhem and destruction on Earth to make them pay for what they did. He's arrogant, sadistic and thoroughly selfish, and after his first defeat he works with Raven to take down the Eco-Team. However, he slowly comes to see the error in his ways and sides with the team to take down Raven.

10. Raven (takes Viloch's place)

Believing Vestroia is better off without humans, Raven enacts a plan to take out the Eco-Team with R's help, manipulating him to make him follow her every wish. She is defeated in the end, though, and made to see the errors in her ways before she sacrificed herself to end her plan of destroying Earth. She's very virtuous but it can be warped if exposed to the wrong side of things.

Metalions Characters:

1. Dan Kouzo (takes Uju's place)

Dan is one of the Archean stone guardians, passed down to him by Philomena Dusk who was a family friend. He is the partner to Dragonoid Maximus, Drago for short, a dragon Metalion, Cyndeous, a knight Metalion, and Gillator, an alligator Metalion. He's the leader of the team with a slight ego, although he does have a pure heart and a bit of a penchant for battling. Dan doesn't give up on anyone and fights Dusk Industries to the best of his ability due to how they're ruthless and uncaring of others. He is also a great fighter, known to have mastered a good amount of martial arts before discovering Philomena's old diary in his house. 

2. Lia Venegas (takes Sinae's place)

Lia is one of the Archean stone guardians, and is the partner to Pegatrix, a pegasus Metalion, Gorthion, a gorilla Metalion, Sairus, a humanoid Metalion, and Cubbo, a bear Metalion. She's the analyst of the group, and also loves music although she prefers video editing. She's a spitfire who does tend to be reckless but after Pegatrix joins her she begins to calm down, learning and creating a better battling style that suits her. She's the only girl on the team until Philomena joins them, and she's relieved of that.

3. Shun Kazami (takes Taesan's place)

Shun is one of the Archean stone guardians, and is the partner to Hydorous, a lion Metalion, Fade Ninja, a ninja Metalion, Vicerox, a crustacean Metalion, and Ramparian, a turtle Metalion. He's the calm one of the group, and he's a bit materialistic although Shun doesn't agree with what Dusk Industries is doing either. However, Shun is a loyal friend who is accepting and loving all the time. He also provides the team with equipment to take down Dusk Industries.

4. Wynton Styles (takes Noeul's place)

Wynton is one of the Archean stone guardians, and is the partner to Troxx, a dinosaur Metalion, Lupitheon, a wolf Metalion, Turtonium, a turtle Metalion, and Batrix, a bat Metalion. He's the brains in the group who also has a prankster side to him, although this did put him at odds with Troxx at first. Despite this, he also has a tenacious fire and won't give up on investigating the truth behind Dusk Industries. He is childhood friends with the others too. 

5. Benton Dusk (takes Season 1 Beom's and Suho's place)

Benton worked for Viloch, a kid without many memories until he slowly begins to regain them, eventually leaving Viloch with his partner, Hydranoid, to join the Guardians. Viloch erased his memories due to him being the leader of Dusk Industries with the help of the Archean stones, but once he meets the others, he begins to remember, and soon joins the team in fighting off Viloch. He's a kind man after he remembers who the others are, and while he struggles with nightmares of working under Viloch, in the end, he has the others to get through these obstacles.

6. Ajit (takes Season 2 Beom's place in the team)

Ajit worked for Haavik before he is convinced to switch to their side, bringing Pharol, a sphinx Metalion, and Auxillataur, a dragon Metalion, with him. Ajit is a bit of a trickster but loves his friends a lot. His trickster side stems from his time with Storm, a former who ends up working with the team after his adopted son was taken and raised by Benton and Viloch. Ajit is thankfully reunited with his dad after the entire fiasco, and he is relieved about that.

7. Lightning (original role)

Lightning is one of the Archean stone guardians and is the partner to Howlkor, a dog Metalion, Artulean, a humanoid Metalion, Phaedrus, a dragon Metalion, and Tretorous, a troll Metalion. He is Dan's pet dog passed down from Philomena, and he knows more than he's letting on. He is the only one who knows Philomena is alive, having been there to see them nearly die, and has been struggling to keep it a secret. Fortunately, he has reunited with her afterward, and he is grateful for that. 

8. Philomena Dusk (takes Young's place)

Philomena Dusk is a helper from the shadows, partnered to Apollion, a centaur Metalion. She has a sharp tongue but means well, mainly due to fearing for her loved ones and growing paranoid of Dusk Industries. She's Dan's godmother and Benton's sister, having discovered Apollion ages ago with him. After the entire thing with Viloch ended, she moved back into Dan's house with Benton, relieved to finally be able to spend time with her loved ones. 

9. Haavik (takes R's place)

Haavik was one of Viloch's commanders, helping him in his goal to suck up all the power the earth can provide. He may be goofy and have some sort of craziness, but Haavik actually cares a lot for the earth, and it's proven when he turns on Viloch. While he does turn out to be an alien who was taught everything he knows by Viloch, Haavik is able to turn from Viloch's teachings and helps the team in the final battle. 

10. Viloch (takes Sigma's place)

Viloch is a Metalion who wanted to destroy humans for "corrupting" Metalions, and decided to destroy Planet Earth to do so. He is greedy, downright malicious, and power-hungry, willing to use any means to kill off humans. However, he ends up being defeated by Geoforge Dragonoid, saving the earth from his dark plan.

11. Tiko (takes Raven's place)

Tiko is the guardian of the Guardian Trial Dimension, where future guardians are tested on their wits and trust in their partner. The team, and Ajit later on, have had to go through this in order to become official guardians, and Tiko easily accepts them as guardians after seeing their determination. He is also easily amused by their antics, mainly Dan, Wynton and Ajit's.