Robo Justice

Robo Justice (ジャスティス ロボ Jasutisu Robo) is a robot suit used in Danganronpa: Trigger Happy Havoc.

Justice Hammer
Robo Justice may use athis hammer in his anime series as a weapon in order to combat justice and kill the bad guys.

Origin
Robo Justice may be another of those anime series which Hifumi likes but this time for little boys as seen in his room and also wears a Robo justice like underwear.

Chapter 3
Robo Justice is a suit created by Hifumi Yamada in order to cause a murder and kill Yasuhiro Hagakure by murdering Kiyotaka Ishimaru. Celestia enlisted Hifumi as her accomplice, by telling him that Kiyotaka forced her to steal Alter Ego and was planning to kill Hifumi. The two frame Yasuhiro Hagakure by putting him in the Robo Justice suit, and make it look like the robot was responsible for both Hifumi's and Kiyotaka's “deaths” - when in fact, Hifumi was only pretending to be dead by putting transfusion blood on himself.

Trivia

 * Robo Justice may be inspired by series.