They brought back most of the Cobra Kai gang including Bobby and Tommy. Tommy actually left the series in a bodybag (he’s the character that uttered “get him a bodybag”), which was so funny. Not so funny is that the actor who played Tommy died a few months later from organ failure.
He was asked to join the series with the other but turned down the offer. The story claimed he was in prison, which isn’t too far fetched for ol’ Dutch.