Wikipedia:Articles for deletion/Alternative versions of Venom
per  - A better question would be why you are assuming that every ''"Alternate version"'' article you come across is automatically not notable by definition. Comic book characters usually go through multiple iterations, so "Other versions" sections are standard. Sometimes when the topic cannot be feasibly covered in the main article because of length (especially with more popular or prolific characters), it is split into a separate article similar to the "In other media" sections. See Joker in other media, for example
— NONE, NONE
Stance: keep
Cited policy: WP:NOTNOTABLE (Wikipedia:Arguments to avoid in deletion discussions)