Despite suggestions that co-creator Len Wein originally intended for Logan to be a mutated wolverine cub, evolved to humanoid form by the High Evolutionary,[15] Wein denies this:
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While I readily admit that my original idea was for Wolvie"s claws to extend from the backs of his gloves ... I absolutely did not ever intend to make Logan a mutated wolverine. I write stories about human beings, not evolved animals (with apologies for any story I may have written that involved the High Evolutionary). The mutated wolverine thing came about long after I was no longer involved with the book. I"m not certain if the idea was first suggested by Chris Claremont, the late, much-missed Dave Cockrum, or John Byrne when he came aboard as artist, but it most certainly did not start with me.[16]