Always Sunny in the Soul
PR Division 2 is to be dissolved in favour of a new Dai-Guard Enterprise Unit, complete with new Dai-Guard pilots and Saeki as tactical advisor. Now, not only must the team face being reassigned to less interesting desk jobs, but they must also live with the fact that their replacements are army pilots who can't even go to the bathroom without referring to a manual! Will Saeki throw out his precious manual in time to mount a useful defence against the Heterodynes?
Aired 18/01/2000EP 16 - Always Sunny in the Soul

Dai-Guard
Thirteen years after their sudden disappearance, an alien race known as the Heterodyne resurface without warning. To combat the Heterodyne, three office workers from the 21st Century Security Corporation operate Dai-Guard - a giant robot no longer regarded as an oversized paperweight. Unfortunately, Dai-Guard is somewhat obsolete and in disrepair. It's a tough job, but salarymen can also save the world.
(Source: Anime News Network)