Yes, there are two different sets of them. They buff themselves for negate and 1st turn 100% def, nothing on turn 2, then reapply buffs such as 100% atk, 100% def permanently starting turn 3.
This version contains two of them, with the buffs mentioned above, they also have very high base def. However, they can still be killed off with absurd amount of buffs.
https://streamable.com/dvfcj
This is the other version, which contains three of them, and they act before the player. However, only the two slash pest has def buff, the blunt one doesn't but has provoke instead. Their def is much lower though since they get to act before the player.