Acro

Acro (real name: Ken Dingling) is a witness in Turnabout Big Top and a former acrobat whose legs were paralyzed during an accident six months prior.

Name
"Acro" obviously comes from the fact that he is an acrobat.

Background
When Ken and his younger brother, Sean, were just children, they were abandoned by their parents. They were later picked up by Russell Berry, the Ringmaster of the Berry Big Circus, who later employed them as acrobats and took care of them like they were his own sons.

Six months before the case, Acro's brother, Bat (Sean), made a bet with the Ringmaster's daughter, Regina, and put his head into the lion's mouth. Due to the pepper spray on Bat's scarf, the lion sneezed and accidentally bit his head, sending him into a coma. Acro tried to save his, risking his legs in the process. Acro never forgave Regina for this and plotted to kill her.