No personality; dull in general. The type who can’t (or won’t) verbalize what they’re thinking when an ambiguous situation, or a change in plan presents itself.

The type who are so experienced yet fail to turn on all exterior lights when crossing runways because they’re too lazy to reach up, or who have just utterly failed to realize it’s a ‘thing’ now.

Those types, IMO. I award them 90 IQ points, maximum. As always, exceptions exist.