this is a preview of how they will henshin, keep in mind Bulk and Stringer is not in here yet [the henshin is based of Kamen Rider Kabuto]
Also:
"Henshin!"= Japanese [it's suppose to be their translation from japanese to english]
"Henshin!" = Their belt's voice
"Henshin!" = English
Henshin[]
"Surge! Breez! Let's Henshin!" Furno said pulling out his Belt and Badge. Surge and Breeze does the same.
"Yes sir!" they said, they put on their belts and yelled: "Henshin!"
"Henshin!" as bulky armor coverder their bodies, then they twist their badges and said "Casting off!" and pressed the badges.
"Casting off!" the armor litteraly flew from their bodies revealing more sleek and less bulky armor, their helmets then changed to cover their faces in animal based helmets.
"Change! Eagle!"
"Change! Snake!"
"Change! Electric Eel!"