|Powers and Abilities|
Various weapons and equipment
|Voice Actor||Michael Gough|
Prior to his first appearance, Lieutenant Steel had had many encounters with Kevin, who was posing as the Omnitrix aliens at the time. Steel and the Special Alien Containment Team were chasing after Kevin, as well as the Omnitrix aliens, across the country.
Lieutenant Steel is very authoritative, and his men fear him enough to know not to go against any direct order from him.
- He first appears in Framed. When the chase is brought back to Ben after Kevin strands Ben (as Diamondhead) holding the cash that the SACT and Steel are led to believe Diamondhead was the thief. Steel proceeds to follow Ben and team with the utmost suspicion that they are harboring the aliens. He ends up saving Ben (as Four Arms) from Kevin while in his mutant form. Steel returns the favor by first having his troops fire on Kevin, saving Ben's life, and by letting him go free instead of having his men attempt to take him down, too.
- He reappears in a dream in Perfect Day during the Forever Knights' attempt to remove the Omnitrix by trapping Ben in a perfect dream world, in which a false Steel arrives and tries to convince Ben that the real Gwen and Grandpa Max are Limax sent by Vilgax. When the illusion is exposed by a flaw Four Arms spots in Vilgax's personality, Steel transforms into Enoch.