Robtish

Robtish is a Scottish accented Nighlok. He has 2 squinted eyes and red skin. He has a helmet with spikes and a fierce grin with fangs. He also wields a sword. His upper body, which resembles an angry beast, is based on the Otoroshi (おとろし?)It is also stated by Octoroo that all the other nighlok are afraid of him. He returns in the next episode, Jayden's Challenge, in which he is ready to defeat him. He is destroyed though, and summons some Flying Moogers into action and is destroyed a final time by the Samurai Battlewing Megazord's Megablade.

Trivia

 * His counterpart in the Super Sentai series that Samurai was based on is Ushirobushi.