Snorlax GX was one of the first GX Pokemon printed in Sun & Moon, but his real power is a bit underestimated!

Snorlax is a 190 HP colorless type with 3 different attacks.
-3x colorless energy for 80 (collapse) and Snorlax is asleep
-5x colorless energy for 180 (Thunderous Snore) but this attack will do nothing if Snorlax is not asleep, but you can use it even if Snorlax IS asleep!

and...

-5x colorless energy (Pulverizing GX) for 210, and Snorlax will be asleep after you use it. This GX attack can be used only once.

Now when we take a closer look at, with 190 HP and FFB, Snorlax can have 230 HP!! 3 or 5 energy might seem crazy but with Max Elixirs and DCE, he can be ready to strike on T2!

When Snorlax starts to attack for 190 per turn with 230 HP it will be unstoppable force capable of smashing everything.

Snorlaxs' best friend in the game will be Hypno from BREAKPoint with the "Goodnight Babies“ ability, that will alow you once during your turn before using an attack, to put both active Pokemon in asleep condition.

If Snorlax can't 1 HKO something, Hypno can cover it with Asleep and force opponent to flip a coin and get heads, or escape from sleep with switch/escape rope or center lady

It's not too expensive, and it's not bad - he is only lazy and likes to sleep to much!