From Fury Diamond:
Vrak will be in his final form in Super Megaforce. He will not appear in the Basco Monster form. The Basco character was not originally written for the season. There is no confirmation on whether they will use his monster form.
Based on the sentai footage, it is possible for them to use the Basco (Monster Form) in the similar way that they used Robogorg as the Messenger.
Nooooo. My hopes for Kei Hosogai for Ameri-Basco are now no more. I mean I knew it wasnt gonna happen. But I could hope.