Though Beck has yet to emerge as a playable character, Inti Creates is nonetheless still adding new content to Blaster Master Zero. This time, the Nintendo Switch version is receiving some exclusive new content in version 1.5 in the form of an all-new Blaster Battle Mode:
The update should be available now, and allows you to choose among Jason, Ekoro, Shantae, Shovel Knight, and Gunvolt (the latter two's Mega Man-esque qualities being the reason I'm reporting this) for competition in both top-down and side-scrolling arena battles, utilizing the abilities and attributes unique to each.
Who will prove to be the true Blaster Master? You decide!