OK, added “Jean Grey”. I searched a bit and there were 2 other adopters of the “Marvel Girl” name: Valeria Richards and Rachel Summers, although I don’t know who was second then third user. And so far I think Jean Grey was still as “Marvel Girl” with this green uniform before her eventual “Phoenix” to “Dark Phoenix” to plain “Jean Grey” names.
OK, added “Jean Grey”. I searched a bit and there were 2 other adopters of the “Marvel Girl” name: Valeria Richards and Rachel Summers, although I don’t know who was second then third user. And so far I think Jean Grey was still as “Marvel Girl” with this green uniform before her eventual “Phoenix” to “Dark Phoenix” to plain “Jean Grey” names.
spoiler🔞
Source: Marvel Heroes Complete Costume List - Jean Grey
Hm. I don’t read comics but I’m pretty sure I’m the cartoon they never refer to her as Marvel Girl. I did not know that was an alias for her.