Cisco Ramon/Vibe

 Cisco Ramon, nicknamed Vibe by Barry Allen, is a mechanical engineering genius and a meta-human at S.T.A.R. Labs, also formerly serving as the prison guard to their makeshift prison. He came from a rather poor Puerto Rican family, and provides much-needed comic relief around his stiff workplace. Cisco is also a member of Team Flash. He was also friends with Harrison Wells before learning his true identity as Eobard Thawne, though Eobard looked at Cisco as a surrogate son before and after his reveal. He also developed a rivalry with Hartley Rathaway and a friendly relationship with Ray Palmer. It was later revealed Cisco was also affected by the particle accelerator, causing him to become a Meta-human with the ability to see through vibrations and the ability to retain memories of alternate timelines of himself before they were altered.