Hartley Rathaway (Earth-27)

Hartley Rathaway is a scientist from Earth-27 that provide tech to the Rogue.

Early Life
At some point, Hartley created a drug that could paralyze for interrogation and gave it to the Rogues.

Containing Johnny Quick
In 2016 Hartley meet Barry Allen a speedster from Earth-1. He was asked to modify a holding node from the old particle accelerator so that they could turn it into a prison for Johnny Quick. After Thawne wakes up, he introduces himself and explain that the buzzing that he hears, is a aura residue from an ultrasonic frequency he developed to prevent Thawne from focusing on his speed and contain him.

Repairing the Wand
When James Jesse gave Hocus Pocus wand back to Barry, Hartley helped him by fixing it with success since it was broken at his arrival.