Who all was killed in X-Men 3.

[Deep Thinkin'!]

We all know about the Professor and Scott, but what about the smaller people? Callisto? Arclight? Pyro? Etc.

 

[BMM]

Dead:

Cyclops
Jean Grey
Professor Xavier (although he lives on in another body)

Arclight
Quills
Psylocke

...I don't think anything can really be said for the likes of Juggernaut, Pyro, and the rest.