 It was the first video game series to involve a crossover between animated giant robots and live action tokusatsu heroes from different established franchises.The series makes this possible by using caricaturized versions of the characters (officially referred as "SD" or "super deformed" characters), which allowed the different heroes and villains to co-exist and interact with each other without the need to reconcile their contrasting styles, settings, or sizes.The first game in the series, "SD Battle Ōzumō