Howl is a hunched over alien resembling a nightjar bird. His feathers are different tones of blue with black markings. He has two talons on his hands and three talons on his feet. He has a large, golden face with two large green eyes and a large mouth. He has bands around his feet and hands that are green, white, and black.
The Omnitrix symbol is located on his forehead.
- Sleep Hypnosis - Howl can put anyone who makes eye contact with him to sleep for a desired amount of time.
- Flight - Howl's wings allow him to glide great distances.
- Sonic Screech - Howl can emit a powerful ultrasonic screech by opening his beak.
- Night Vision - Howl can see clearly in the dark and has enhanced vision.
- Bright Lights- Howl has sensitive eyes. As a result of this, he can be blinded and disoriented by any light suddenly shined into his eyes.