Star Breaker, wearing her Halloween Costume '17, is featured as one of the shopkeepers of the Bakery in Bounty Hunt Mode, where she is known as Star Baker.
Star Baker is quoted in the description of Shokupan.
Star Breaker is the final boss in the game Sora, and is known as the blasting fuse to the world's end.
Before being enlisted in the war and becoming Star Breaker, she was originally a young woman named Hoshino Reika. The dichotomy between Reika and Star Breaker is explored in 200% Mixed Juice!. Reika appears in the artwork for Wanted.
A drama CD, titled Love Love★Star Breaker, was released at Comiket 82. It features an alternate reality story, with Star Breaker (as Reika) living out a normal day as a high school student.
Star Breaker is voiced by Toda Reina in Sora and Love Love★Star Breaker.