Most inhuman True Final Boss criteria?

[xxx1993]

What's the criteria for Gluon in both Psyvariar 1 and 2, anyway?

[Weak Boson]

Not sure about 2 but the requirements on Wikipedia for medium unit and revision seem correct: you just have to reach a certain ship level before the end of the penultimate stage, the numbers being 52 for medium unit and 218 for revision.

Doing this requires you to play the game well, but there's a potential for much higher levels so I wouldn't say it's on the "inhuman" levels

[xxx1993]

218?! Jeez...