metahuman
A metahuman is someone exposed to some mutagenic compound, such as in the form of a gas, that mutates them down to their DNA, either giving them a superpower or altering their appearance drastically.
See, also, Bang Baby
See, also, Bang Baby
Bang Baby (a metahuman created by the metagas created by Alva Industries)
borderline metahuman
Badass Normals, especially ones with low-key superpowers
Robin from Teen Titans 2003 is a Borderline Metahuman