This enemy appears to be a Pigge carried by three Doges. The Pigge appears to be wearing a white headband, while the Doges seem to be wearing some sort of white clothing along with a visor. Its attack animation consists of the three Doges jumping up and preparing to bite, throwing Pigge up into the air. Pigge then lands on the Doges and they bite the target.
Fortunately, with only 10,000 health and 200 attack power, this enemy is not very threatening, the only other thing it has going for it is its quick attack rate.