I haven't seen Arrow but I saw JB as Malcolm in a crossover with The Flash. He was great! Also on Legends of Tomorrow.

He's a little man with his arms up so he's sort of shaped like an H and has sticky hands and feet, and a flexible waist. In one of his adventures he's walking along a garden wall and gets his foot stuck in a hole, and there's a cat coming towards him. t's funny and cute. I miss the little purple guy. The new promos are crap.

That's why I love Brennan, so direct and to the point. She has no tact.