If a pixelmon runs out of pp it cant battle causing forcing u to log off or be stuck in a battle that will never be finished. This is really a pain when you fight something like lungi and the battle justs goes on. Than u log off and the pixelmon gets deleted...
Little off topic, but what is a Lungi? Doing /home or /spawn usually fixes the issue. But it's a bit frustrating. Groudon is a pain to catch.
I'm pretty sure he meant Lugia. Lugia is a flying/psychic type Pokemon. He is the boss Pokemon in Pokemon Silver. He is the opposite of HO-OH, if you know that Pokemon. Spoiler: Website where you can find out more Lugia - #249 - Serebii.net Pokédex
Can I just point out that the issues can be avoided if you go into the fight prepared... there are items to gain pp back as well as 2 forms of instant catch pokeballs. There was a reason you almost always got a metapod in a pack of cards every 7/10 times vrs a holographic mew, just say'n, its called Legendary for a reason...