u/Basically_A_Person1

Masks both have dual-lenses in red/orange, with nose port & no mouth respirator, creating a beak-like effect along with bony, hollow cavities in the cheek areas for both alien masks

McFarlane Halo Didact included to compare with Hasbro Black Series 11th Brother.

The masks look incredibly similar. Hood on that inquisitor can distort the similarities but once the Didact is hooded they look too similar. The dual-lenses glowing eyes help their case, too.