Molecular structure is the key to success.
Huffer is cynical, hard-boiled, and pessimistic. "He looks at the world through sludge-coloured wind-shields." Will complain it can't be built, then builds it anyway. Not too sociable, but absolutely reliable. Arm sensors can test materials for strength, heat resistance, elasticity, etc. Extremely strong. Superior mathematical and geometrical abilities. Often unhappy and homesick for Cybertron.