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I've always liked these two but I've never really followed the Cloak & Dagger comic book series. The Marvel "Knights" did not quite interest me as much as the groups did - except for Daredevil of course.
A little known fact about Marvel's Cloak & Dagger is that both have been members of the Avengers (Secret Avengers under Captain America), and the X-Men (Dark X-Men under the White Queen, and later the regular X-Men in Utopia under Cyclops).
This is a peculiar honor because, unlike Wolverine, Storm, Rogue, Sunfire, Havok, Quicksilver and the Beast, neither of them are mutants. They were with the X-Men by circumstance, and they did leave after a while.
The only other person I believe to have done this would be Dane Whitman, the Black Knight, who was I believe a member of Excalibur.