It was originally founded by Rigel, Karo, and Silver, and Ice almost immediately joined after. These four found themselves working for Creep's mob as the highest ranking members. Additionally, there were a couple other, lower ranking mob members who desperately wanted to be part of Team Indigo. While their memberships were unofficial, they still joined the team on several missions, but never seemed to be "right" for the team. As Creep's leadership began to fade, they seemed to be on their own most of the time, even taking it upon themselves to add in Kato. While Creep focused more on his own things, the team decided that it would be best for their image as heroes to split from the mob. They set up in a smaller building across the street from Creep's mob building. During the move, they eagerly welcomed their newest member, a wanderer named Zee, into their group.
An adventurous Astral Pancham who seems to be viewed by his friends as the team's leader. His unique powers, combined withhis Pokemon abilities make him very powerful, especially considering his size. Additionally, his ninja training make him an expert in stealthy operations. On top of all this, he's a werewolf with decent control over his powers,except under certain lunar effects. His courage and quick thinking make him a good leader. He also puts others before himself, which unfortunately causes him to get into trouble quite often.
Silver is a shapeshifter of some sort, usually seen in the shape of a Sylveon, with a mysterious history. He is easily the most serious member of the team, having little patience when his sillier teammates are goofing around. He relies on his brute strength more than anything in battle. He also has a plethora of spells and a heavy weapon at his disposal. He prefers going straight towards the main goal of a mission, rather than getting sidetracked by other things. He's also found ways to put his belly to good use. He will not hesitate to take charge if he feels the need to.
A childish and playful Ditto. Karo prefers just hanging out and playing with his friends rather than going on serious missions, but still loves the adventure. Karo always finds away to make use of his transforming, which is extremely helpful to the team. His childish nature often leads him to try and befriend bad guys, which he surprisingly succeeds at doing sometimes. Karo eagerly tags along with his friends on any mission because he likes the adventure and spending time with all his friends, and gladly helps out when it means keeping people happy.
Hazeel, sometimes referred to by her nickname, Ice, is a friendly and slightly sassy weavile. She has a healthy balance between her silly and serious sides, knowing when she needs to act more seriously. Hazeel uses her speed, razor-like claws and ice attacks to her advantage well. She tends to act like a cat more often than not, and has a strong obsession with lemons. Overall, Hazeel is a fun and caring member of the team.
Kato is an energetic and endlessly cheerful shiny Pachirisu. He's always looking for a way to keep himself entertained. Like his friends, he loves having adventures and exploring new places. His love of science lead him to invent numerous tools and things for his friends, though some are more useful than others. He also serves as the team's doctor, however some of his practices are a bit questionable. Sometimes he can be a bit negligent or clumsy, but would never let any harm come to his friends.
Zee is a Lucario and the newest addition to the team. He's a lot calmer than the others, allowing him to think carefully about the consequences of their actions. As he spent most of his life wandering around on his own, he has tons of life expirience that he can put to good use when they become relevant. Zee has an interesting way of ending conflicts more peacefully than the others. Even when their antics get strange, he usually goes with what they're doing until things get really dangerous. Zee's more sensible nature is extremely useful to the rest of the team.
The telekinetic Buizel doesn't join the rest of the team as often as the main six. He prefers doing his own thing and keeping to himself. He doesn't tolerate the more wacky antics of the rest of the team, though he does care a lot about everyone. However when he does tag along, he puts his telekinesis to great use. In some cases, he shows up later when the team needs back up. He's extremely smart, which helps the team out of a lot of trouble. His plans always work out, if anyone listens to them. They usually seem bad at first, but eventually have the results he wanted.
As a Greninja, Zeke is able to move quickly and quietly. He is a skilled ninja and strong fighter. He obviously has a strong friendship with Zee, since he just showed up not long after Zee joined everyone. Like Justin, he doesn't join the others very often, since he's usually doing his own things and there isn't a strong demand for a second ninja on the team. He still enjoys spending time with everyone and shows a much more playful side when he does.