 As he was not a compatible host, it only gave him the ability to change into a cat at will for up to ten minutes at a time or else he will not be able to regain his human.Ryô also built Mew Ichigo's and Mew Berry's respective robot assistants, R2000 and R3000.Ryô tends to talk to the girls in an abrupt manner, but displays a strong sense of personal responsibility, particularly with regards to the Mew Mews.