The future of Heroes Reborn has yet to be officially announced by NBC, but if and when the franchise does continue for Season 6, Robbie Kay would “love” to be part of it, per IGN:
I would love to reprise the role if the opportunity presents itself, because this has been a really, really cool journey and a really cool character study. It’s been such an arc with Tommy, and so much goes on. It’s almost like I’m playing two different characters sometimes, with him in the past and him in the present. You’ve seen in episode 8 now that there’s two different personas to him. There was the younger, confident Tommy who knew what he was doing, as opposed to the awkward Tommy who really didn’t know what he was doing, because such a huge part of his life was missing in his mind. So it’s been really, really cool to explore that.