Iron Man: The Vision is an Avenger. And we agreed that all members of the current roster would be allowed to choose -
Nick Fury: That ain’t how we see it, Shellhead. The Vision was created by Dr. Henry Pym while he worked for S.H.I.E.L.D. So, it bein’ a work for hire - like any o’ the other widgets that yer boss, Tony Stark, built fer us over the years - the Vision is stayin’ put.
- From Avengers #7, by Jeph Loeb, Rob Liefeld, and Ian Churchill. May 1997.