Rogue Leader can make all pigs to attack the same target after 2 turns. Like normal Rogue, he deals double damage.
Sometimes, he is considered as a boss:
Strategy of Defeating This Pig
You should defeat the Rogue Leader first, because he can command all pigs to attack the same bird after 2 turns. If he is defeated, all the enemies will not attack the same target.
Attack him until he dies.
Warning 1: The Rogue Leader will command all pigs to attack the same target after 2 turns.