He startles, stunned by the disappearance, and then forced into action because of it. He sparks red and blue in frustration and hurt. Could he blame Joker for saying something like that after what he'd just did? Probably not, but that he'd even lightened his accent, just so he could be sure Psi understood. He growls, the sound a bit like a swarm of angry cicada's before he shouts out around him

"Coward!"