Well not Excalibur really is taking influence from Quatermass.

Unfortunately it seems to be taking it from the Hammer Horror movies rather than the classic (and far better) BBC serials.

Uncanny X-Men: Lorna Dane and Rachel Summers (Lorna for pre Giant Sized and Rachel for post)

X-Men: the Hidden Years: nothing really stuck with me for this run beyond pre existing character of Lorna who was tragically under utilised.

Emma Frost: with this ongoing looking almost exclusively at Emma Frosts Backstory and being my first introduction to her I have to say it’s Emma Frost.

Captain Britain: I’m going to group all the various titles and runs together for ease but it is, of course, Linda McQuillan.

Alpha Flight: Jodi Furman I’m sorry but it is I love her so much. Kara is also quite high up on my list if you want a regular.

New Mutants: Who else but the one and only Dani Moonstar.

X-Factor: surprisingly as he never impressed me before, Archangel! But only after his death and resurrection. I also have a soft spot for Famine for some reason.