The new chojins are pretty cool, but not a single returning character or character related to someone from Nisei like Ricardo's father...so sad.
There is still a whole arc to go, and if what is about to happen is what I've been speculating, there will be a LOT of characters involved. According to the Demon Seed and Time Chojin arcs in Nisei, some huge invasion happened. In the Demon Seed arc we see Shogun standing before an army of Chojin, with the ones we remember on either side and a lot of others remaining unseen, obscured by Shogun. Then in the Time Chojin arc, we hear more about this big attack and we are told some mysterious Justice Chojin stood before them and held them off. We see this Chojin twice from the back, huge, muscular, and with long seemingly blonde hair, as he charges towards a huge army of airborn Chojin.
In the previous arc, Nemesis and Ganman both mentioned an impending catastrophe, Now this is happening and I can only assume Yude are going to finally connect all the dots.