Morgrem is a somewhat humanoid Pokémon with a magenta upper body and a light green lower body divided by a zig-zag line. It has large muscular arms with hands that have three very sharp fingers and round feet that each have three toes. Just like its pre-evolution, Morgrem has prominently large ears, large eyes with red pupils instead of the usual black, a long nose with a single nostril, although much longer and pointed upward, and a mouth with extremely sharp razor fangs.

Its face mask and bat-wing extend to be fully grown long, black hair with a bang that covers its left eye. The end of the hair is shaped like a pole arm. It is known to do false acts of forgiveness, luring in opponents and getting down to its knees, before stabbing them with its hair. It is believed that Morgrem has the ability to make plants grow.