The Multiplayer Mode on Blaster Master Zero could be also referred to as 'Eve Mode', due to one bit of fridge logic... Who would be manning the turret and dropping items, OTHER than Eve?
Maybe SOPHIA III itself, since Jason is alone in Areas 1 and 2. SOPHIA Zero could be co-operated by Fred...
And we exclude characters like Lumen, for the EX Characters.
Humorously, In the Japanese Launch wallpaper, Jason is shown holding the blue Joycon, as in Player 1's... and Eve is shown holding a 3DS in one hand, and the RED Joycon in the other.
