I'm wondering if character has to have a minimum of 1 in speed value to be able to move. If I'm reading it correctly, a character like Despotellis with 0 speed value can!


MOVE ACTIONS
A character given a move action can move up
to its speed value in squares across the map.
A character might have a power or ability that
affects how it can move. A character does
not have to move its full speed value, and it
can choose to move 0 squares


MOVING YOUR CHARACTER
When you give a character a move action, it can
be moved a number of squares equal to its speed
value. Characters can move in any direction, even
diagonally, and through squares occupied by other
friendly characters (but not opposing characters),
though you can’t end a character’s movement in
the same square as another character. You don’t
have to move a character its full speed value, but
you must stop moving the character when it enters
a square adjacent to an opposing character.

My impression, in no way binding:

As worded, if you wanted to give Despotellis a move action with a move of zero simply to do so and put an action token in him (it), it would be a legal move.

This works for anyone but the ASM Groot whose power states that he "can not be moved".

Is it possible for despotellis to use sidestep? For instance say I put the Supreme Intelligence resource on him which gives the assigned character sidestep at one point can despotellis use it or is that modifying one of his combat values?

That is not a modifier, so it's all good.