A quick Google search for GURPS Displacer Beast gives several results,
here's a pretty decent one. Note that version, because it uses Defensive Obscure, has the added benefit of allowing close allies to benefit from the displacement as well.
GURPS Malboro isn't so easy. As a plant, it probably has No Brain, and probably has No Eyes besides (it technically does have eyes, but you'd have to poke so many out to actually inconvenience it you might as well say No Eyes). It may have Extra Arms, with all its arms having Flexible (being tentacles and all), but it typically only attacks with its mouth, which may have extra Striking ST and certainly has Born Biter. It arguably has Born Biter 5, as it's basically just a giant face. Bad Breath is a large series of Linked Afflictions with Area Effect, Blood Agent, and Selective. While in
Final Fantasy it tends to bite and retreat, in GURPS it would probably bite the target, turn this into a grapple, and worry away until the target was in two pieces.