His real name is Malcolm R. Willoughby, and his rank is that of Navy petty officer 2nd class (Master Diver's rating).

Joe Team diver; eight more did not make it out of the practical application testing, and Deep Six was able to hold his breath the longest out of the four remaining finalists.

[6] A new version of Deep Six was also released as part of the Eco-Warriors line in 1992, which came with a pet dolphin named "Finback".

[7] A version of Deep Six was released in 2009 as part of the "Rise of Cobra" line, despite not appearing in the film of the same name.

He escapes any actual work when a coincidence allows other Joes to bring back a party van filled with balloons.

[13] Deep Six is trapped in rising waters when Storm Shadow rampages through the USS Flagg.

To save others from risking their lives, Deep Six accepts Snake Eyes taking his arm.

The first one dealt with him saving a kid from drowning while explaining the dangers of not wearing a life jacket.