That Time I Got Reincarnated as a Slime (2018)

S1E10 The Orc Lord

After an Orc army decimates their clan, only six Ogres remain. They claim the Orcs were accompanied by a strange majin dressed in plate armor and a clown mask. Rimuru suggests they join his group, and they agree, stipulating that they want revenge on the Orc leader. In response, Rimuru names each of the six Ogres. Meanwhile, the Orcs are starting to invade the marshlands near Lake Siss, which are home to the Lizardmen. In reaction to this threat, the Lizardman chieftain instructs his son, Gabiru, to take action.