Pentafras

The  is a TESTBED boss.

Design
is a boss styled after Sassafras. As its name implies, it is pentagonal and its body is primarily dominated by a large central eye. Its frontal vertex has a Shotgun and Builder turret stacked on each other, then the vertexes following it have Shotguns, and the remaining vertexes have Builder turrets. It also presumably has minions like Sassafras but it is not known for sure.