During the first fight (the one before getting Zetta) I used a character as a bait to get hit by his pringer beam and then, I moved him behind the base panel. I used this method because Pringer X had enough SP to used one Pringer Beam, one Pringer Rush and some Prinny Destroy. It took more than 100 turns, but he finally attacked me with his Prinny Rush. I used this strategy because in my past fights against him, he always tried to use Pringer Beam if he can move to your side and, if he can't, he usually attacked me with Prinny Destroy. --- Excuse me if I have a bad English, it isn't my mother language.
You can also crush his SP with a Death monster and recover it so he has just about enough to use Prinny Rush/Destroy. --- Now playing: Uncharted 3, Disgaea 4/ Wishlist: FF XIII-2 BBCS II Main: Loli / Sub: Ragna
For the 1st fight, I had a lv6000 Mothman with Trick Move evility dodge every single one of his hits. After 2 attempts of not seeing Prinny Rush, I brought SP restoring items for when Pringer lost all it's SP. About 50 turns in, he finally used it! --- This has been another (probably) uselessly informative post, by me. Booyah!
This method got me the 3 moves in about 4-5 turns.
Steal his crowbar. Position 3 characters in a L shape, he should use the 2nd special in about 2 turns Move the same 3 characters into a line, he should use the beam attack. Move all but your strongest back into the base, he should use his 1st special.
I found that he was less likely to attack normally if my characters could survive his attacks, I had 3 lvl260 makai wars on everyone and my levels ranged from 1k-4k. --- Life is overrated.