It's just a vectorised image of Yukimura from Samurai Warriors[1]. This image to be specific[2]. Don't think there was a designer, just a developer making a logo using a character they like (or maybe it was random image search). Pretty common in open source.

[1] https://koei.fandom.com/wiki/Yukimura_Sanada

[2] https://static.wikia.nocookie.net/dynastywarriors/images/9/9...