Misfortunes Never Come Singly.
Kotetsu takes on Barnaby's attacks, trying to get him to remember him, eventually succeeding when he calls him by his nickname. As they head back towards Apollon Media with Saito, the company's head researcher, they learn that Maverick has taken Kaede and the other heroes hostage, holding them at Justice Tower. Upon arriving at the tower, they discover that the fake Wild Tiger is a robot called H-01 created by Rotwang, working in cahoots with Maverick, who is planning to replace all the heroes with androids. Meanwhile, the rest of the heroes are trapped in cages with bombs attached to their necks. Rotwang informs them that only the first to deactivate his/her bomb will be spared, at the cost of the others' lives, with all of them being killed if none of them do so before Tiger and Barnaby are defeated by the robot.
Aired 04/09/2011EP 23 - Misfortunes Never Come Singly.

Tiger & Bunny
Sternbild City is home to people called "Next," who use their special abilities to protect the people as superheroes. These heroes solve cases and save lives so they can wear sponsor logos or acquire "hero points." Their activities are documented on the popular program "Hero TV," which picks the "King of Heroes" in a yearly ranking. The veteran hero Wild Tiger has always preferred to work alone, but now he's been assigned the rookie Barnaby Brooks Jr., who has a different perspective on being a superhero.
(Source: Anime News Network)