[Sunred]

The red gloves does have me agreeing that Zero Two would be a likely choice and a nice tribute to Kamen Rider Nigo. I mean he even is flexing like Nigo somewhat as well.
On the other hand, if they go with either Shin Zero-One or New Zero-One to pay tribute to how the first two Showa riders powered up mid-season that could work too I guess. Also anyone notice the red piece on one side of the combat lungs resemble the red scarves Ichigo and Nigo had?