Diego

Diego is the researcher, R&D Staff and protagonist in Hard mode

Appearance
Diego have a Bowl haircut, He wears a researcher coat with teal undershirt and black necktie

On Hard Mode, Diego has white bomb suit with orange trims and his default helmet is also white with orange trims, green holder set and teal visor

Capabilities
Diego can research and upgrade all Leo's weapons

On Hard Mode, Diego capabilities are same as Leo's