The Barbarian King is the first hero unlocked at Town Hall level 7. He is a larger, stronger, more aggressive, more impressive, and more powerful Barbarian.
Strategy
Offensive
The Barbarian King can often be used to create funnels; if there are no gaps in nearby Walls, he will stay outside the Walls and clear out buildings placed outside.
A common way to use the Barbarian King is as a tank, to distract the defenses to allow troops with low hitpoints to survive.
When attacking, he can be deployed just like any other unit.
He is best used with support from ranged troops, such as the Archer or Wizard. He is also good for helping to destroy the remaining buildings of a village, after most or all defenses have been destroyed.
Defensive
The Barbarian King is the only hero that can’t target aerial units. Despite this, he can still stall air units that do not have a preferred target such as Dragons, because such air units will target him even though he poses no threat to them.
Unlike troops in the Clan Castle, the Barbarian King cannot be lured to the edge of the map and then destroyed out of range of the defenses (unless his altar is near the edge).
