It's sans but it's a being with much hunger and only wants meat and if you don't feed him, he will eat you, when it gets angry and with much hunger, his whole clothes turns white and black, his eyes will bleed and also his mouth, his chest would open showing his organs, male, when it's not angry he is normal sans, likes normal meat and... Human meat, he likes the puns and the reason why it's called human sans it's because has human organs.