Flaming Sidekickers

The Flaming Sidekickers are the sidekick group attached to Enji Todoroki, the Flame Hero Endeavor, and operate out of the Endeavor Agency. Their assignments tend toward the minor work, including holding onto the villains Endeavor defeats until the Police Force takes custody.

The team's catchphrase is "Flame On!!", a line it shares with the Human Torch, the Marvel superhero with fire powers.

In the Final Performance Arc the unit organized Endeavor's patrols around Naruhata after Bee☆Pop's first bombing, since the villain had promised to come back and Endeavor meant to finish her. When she returned, the heroes on the ground concentrated on moving civilians out, and once the streets were confirmed clear the Flaming Sidekickers sent up signal flames so Endeavor could use Hellflame without worry. His Hellfire Storm brought Bee☆Pop down, but Burnin spotted The Crawler and shouted, forcing Endeavor to cancel the move to his considerable displeasure. The team then watched events unfold until The Crawler escaped carrying the unconscious villain.

Kido and Onima traveled to Hosu alongside Endeavor and his son Shoto, hunting the Hero Killer, Stain, and ran into several Nomu instead. Endeavor fought them alongside other heroes while Shoto slipped into an alley to back up his classmates, and after the Hosu Incident the two guarded the Nomu that Gran Torino had beaten until police made the arrest. The pair reappear during the Joint Training Battle, uneasy about Endeavor's mental state because Shoto was not answering his messages, and in Heroes: Rising they help ambush what turns out to be League decoys before treating injured Class 1-A students on Nabu Island.

When Izuku, Shoto, and Katsuki chose Endeavor for their second Hero Work-Studies, the Flaming Sidekickers gave them a hot welcome and explained how the agency runs, then accompanied the trainees on missions and took charge of the lesser villains Endeavor left behind. The whole unit joined the operation against the Paranormal Liberation Front, split across different fronts. Kido and Onima raided Jaku General Hospital with Endeavor's team, fighting through the Nomu that flooded the building after the heroes moved to arrest chairman Kyudai Garaki, and later stormed his secret laboratory to help finish the High-End. Both escaped in time, thanks to Ryukyu, when Tomura Shigaraki woke and used Decay to level the hospital and kill nearly every hero inside. Burnin meanwhile led the students evacuating Jaku City, ordered a retreat once the Decay spread beyond what the students could stop, and got no answer when she radioed the hospital team. Endeavor eventually reached her to report he was fighting Tomura and that the villain was heading for the city after something called One For All, a term neither of them recognized. Deku overheard and tried to call out to her, but she was already busy reorganizing hero forces and pushing students and civilians clear as fast as possible.

Moe Kamiji, the hero Burnin, is the most prominent figure in the group and takes command of the student evacuation during the war. Kido and Onima are the pair most often at Endeavor's side on missions, guard duty, and first aid, and an unnamed horse sidekick rounds out the known roster.

All of them work under the Endeavor Agency, and the team is listed as active.