In novel it said his elf and dwarf forms don't look like him at all, the vampire uses control over blood to change his appearance (plus vampirazation), the Saint's face changed considerably after receiving the blessing, the barbarian changed his face muscular structure to look different from hubert the merchant, and any alter ego made after that doesn't have his exact face or build, (I don't need to explain hans is a skeleton). The only clone that has his exact face is hubert (the merchant) but he uses his glasses and an expensive artifact to dim the perception of his face. But manhwa just ig over all that.

"Dude, have you ever noticed that the strongest leaders and adventurers of every race have the exact same face and hair? I swear to God, that it's just the 1 woman with 12 twins running the whole world"