An image is floating around in Baidu about the trademark registration of some of the Ultraman Toys. Among them, someone spotted this awkward toy with Ultraman Zero's head. As per the rumors, it is said to be Ultraman Trigger's new weapon.
Yeah, I know it's Zero. Makes no sense to be connected to Ultraman Trigger. But if this is true then probably Bandai / Tsuburaya decided to reuse the Beliarok idea from Ultraman Z since it got pretty popular.