Just got in, sitting down to write... and apparently this is my warm-up?
by "unconventional" I mean.. not the typical "Robin to your Batman" example.
The one that
immediately comes to mind for me is (Kitty Pryde's) Lockheed.
Can be either a hero or villain...
Not the easiest topic, because there's only so many of 'em out there.
.. and I guess "Best" was unnecessary; I'm just looking for unconventional sidekicks, in general.