Longman Dictionary of Contemporary English
n. 1 (plural of external English) 2 outward features or appearances
The Externals are a group of fictional characters. Considered a rare subspecies of mutants, most of them were X-Men antagonists. The original, unused name for the group was to be The Prophet$, as seen on the back of the Sunspot & Gideon trading card included with X-Force #1.