Kieran Everett

Kieran Michael Everett, nicknamed Nightmare, was one of the many people in South City to be affected by the particle accelerator explosion. As a result of the explosion, Kieran was put in a coma for two years until suddenly waking up and disappearing from the hospital after discovering his powers.

He became a target of the Puppet, who entered Kieran's "mindscape" until rescued by Ben. After agreeing to help Team Zero, the Puppet, however, proceeded to takeover Kieran's body and destroy his conscious. After being rescued, using his gift, Kieran became a trainee of the team before leaving.

In 2024, Kieran was gravely injured by Xeno and forced to use a bionic arm.

Trivia

 * Originally, once the Puppet entered Kieran's body Kieran himself would not have resurfaced and his body would've been destroyed. However, this was changed after Kieran proved to be popular with the staff.