Oh, well, back in... I think it was 2017, I kinda came up with it as a username/YT channel name, and I guess it just kinda stuck with me. I came up with it because my pfp for all the sites I used was an eevee dressed as slyveon, and when I showed my friend, she was like, "Aw, Eevee is a wannabe!" and in the next 2 seconds I came up with "Wannabeevee". I use it for most accounts, and Im planning on changing my IMGFlip usename to it, one day at least.