Dr. Coyle is a playable fighter and the secondary antagonist in ARMS. She was released in Version 5.0.0 on December 22nd, 2017.
Hedlok is the overarching main antagonist of ARMS. When fought, it attaches itself to a fighter and uses its six ARMS in total to unleash devastating attacks.
And she is reprised by Donna Burke in the English dub and her Japanese voice is unknown.
And he is voiced by Clancy Brown in the English dub and will be voiced by Ryuzaburo Otomo in the Japanese dub.