Xbooru - 1boy 2d 2d (artwork) alpha channel anthro anthro only asriel dreemurr asriel dreemurr (god of hyperdeath) balls black markings boss monster bovid caprine completely nude completely nude male cowboy shot digital media (artwork) face markings floppy ears fur furry furry male furry only genitals goat goat ears goat horns high res horns humanoid genitalia humanoid penis male male anthro male only mammal markings mildred (artist) monster monster boy nude nude anthro nude male penis rainbow outline red eyes solo solo anthro solo male testicles third-party source transparent background undertale undertale (series) video game character video games white body white fur