Thawne murders and assumes the identity and genetic appearance of Dr. Harrison Wells to found S.T.A.R. Labs in Central City, spending the next fourteen years building a particle accelerator to empower the Flash apparently ahead of schedule. "Wells", along with Caitlin Snow and Cisco Ramon, mentors Barry in defeating metahuman criminals caused by the particle accelerator explosion. Thawne pushes Barry into getting faster with the goal of using Barry's pure connection to the Speed Force to return to his own time period. To that end, Thawne also taunts and bests Barry as a tachyon-enhanced speedster–initially referred to as the " Man in Yellow " before he's dubbed the Reverse-Flash by Cisco.