Ultimate Brainstorm is a crab-like creature with metallic skin. His headcase is set open with a transparent coating showing his large brain. His head lies atop a central mass of black tissue with electrical ports that electrostatically maintain the position of his six limbs. Two of these limbs are clawed arms and the other four are legs. Underneath this section is a lower body with similar plating to his head and limbs.
The Ultimatrix symbol is located on his bottom body.
- High Intellect- Ultimate Brainstorm's intelligence is highly developed and lets him think faster and smarter than most others.
- Electromagnetokinesis- Ultimate Brainstorm can control electromagnetic fields to create small jolts of electricity and to move his limbs.
- Electromagnetically Charged Limbs- Ultimate Brainstorm has electromagnetically charged limbs to stay within a vicinity of the body. He can detach limbs and move them far from his central body. He can use this to grab foes, spin his limbs around quickly or send a limb flying.
- Durable Exoskeleton- Ultimate Brainstorm's metallic skin is very durable.