Twin Signal: Family Game
English name: Twin Signal
Genres: Action, Comedy, Sci-Fi
Type: OVA, Episodes: 3
Aired: Sep 21, 1996 to Nov 21, 1996
Source: Unknown
Rating: PG-13 - Teens 13 or older
Synopsis:
Signal, a robot companion built for Nobuhiko, is attacked by Pulse, one the its creator's previous prototypes. Reprogrammed by Dr. Otoi's mysterious rival, Pulse is loaded down with weapons and sent on a mission by Otoi: steal the most recent robot technology, and obliterate anything that gets in his way. 

(Source: ANN)