Kul'dar

Supreme Commander Kul'dar is the leader of the elite guards and probably the former Emperor of Planet Gur'latan.

BoBoiBoy Movie 2
When Retak'ka came to Planet Gur'latan to strengthen his elemental powers, he encountered Guruhan's Army. Commander Guruh asked him his identity but Retak'ka used his Voltra element and start draining the planet's energy. Commander Guruh ordered the army to attack Retak'ka. Later, when Fang and Captain Kaizo arrived on the planet, they were astonished to see that the whole army has been defeated.