Joseph Meyer

Joseph Meyer, also known as Gridlock, was a Metahuman who used his powers to absorb kinetic energy and rob banks and attack police officers.

He was murdered by Cicada.

The Flash: Season 5
He went on a robbing streak against the people and banks of Central City even attacking police officers of the Central City Police Department attracting the attention of the members of Team Flash at STAR Labs which results into the Flash and Elongated Man coming after him. He manages to defeat the both of them, forcing them to retreat. When the team including Vibe return to face him again, he almost wins again, when Vibe uses his breaching powers to keep him at bay and they manage to defeat him, subduing him and deliver him to the CCPD.

He was freed by Amunet Black and her companion and together the three managed to defeat Team Flash who showed up after being alerted to the fact that the transport was attacked. Gridlock is then informed by Amunet about the reason why they freed him, a caught Metahuman on a plane and they aim to free it. Gridlock, Amunet and the newly christened Block board the plane thanks to Amunet's former identity as a flight attendant and almost succeed, if not for Team Flash standing in their way again. Despite crashlanding, Amunet and Block disappear from the scene and Gridlock is arrested again. This time the transport was attacked again but this time the attacker did not come to save him, instead knocking out the guards, nullifying his powers and killing him on the spot.