Never let anyone else define you. Don't be a jerk just to be a jerk, but if you are expressing your true inner feelings and beliefs, or at least trying to express that inner child, and everyone gets pissed off about it, never NEVER apologize for it. Let them think what they want, let them define you in their narrow little minds while they suppress every last piece of them just to keep a friend that never liked them for themselves in the first place.
The Primal Monitor is formless. Though it created the Monitor race/realm, there's really no way to 'rank' it from a power standpoint or w/e.
Ultimator wasn't real per se -- she was just part of a story Mxy made up. Though even if she had been real, she was still beaten by a plot-device Mxy came up with. Same thing with 'The A': he was gargantuanly powerful(able to eat 5D beings like pieces of candy), but he was ultimately beaten by yet another Mxy plot-device.
That said:
-The Presence
-Mxy
-Ultimator/The A (their feats/defeats were very similar.)
-GEB (Spectre alone could have easily beaten it.)
*Leaving out PM for reasons already mentioned.
__________________
"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."