So Sega's had this kinda-sorta-franchise going on for a while. What is it? Personified Sega consoles, as cute girls. They're called Sega★Hard Girls, hard being short for hardware in the same way soft is short for software. Also SeHaGirl for short. The main characters are Dreamcast, Saturn, and Mega Drive, but there's also lots of other characters, including VMU, Game Gear, and... Robo Pitcher. I feel like I should mention that Sega's been selling a lot of Dreamcast/Saturn/Genesis merch lately, too. This series has also had crossovers with Dengeki Bunko Fighting Climax and Neptunia.
Here are the characters so far:
Spoiler:
Okay but now I want old soundchip girls.