Let's go through some basic knowledge before I talk about it further...

Characters: Mew & Mewtwo
Canonical?: Fanon
Relationship status: Former Enemies/Allies
Also known as: Catshipping, MewTwo, MewMew

What do I think?:

Mew is like a million years older and is the parent of Mewtwo in a way so this seems... wrong

I shall rate this ship: -10000/10

Thanks for reading, see you in the next chapter!!!