Information of each character is from Transformers Universe News, but special thanks to e-toyz for the news and link ^^
In robot mode, it was important that Prowl have his shoulder mounted missile launchers, as he did back in G1. The design team also worked with TakaraTomy to create an innovative head reveal as part of the conversion process.
For SUNSTREAKER, the design team sought to create a cool concept sports car that was reminiscent of the character’s G1 form. In robot mode, the team modernized Sunstreaker’s head from G1, but originally weren’t able to achieve the proper fit to allow for the toy’s conversion. A final change to convert part of the "ear" panels allowed the team to capture the look it desired.
This triple-change converts to a robot, airplane and tanker truck. Originally planned as Octane, the team ended up having to change the name to Tankor. Like Prowl, this character also features an exciting head reveal. Painted with all the details, this guy looks like a mean Decepticon ready to blast and cut something to shreds.
For POWERGLIDE there were a few important design considerations. First, the design team wanted POWERGLIDE’s head to still have a dome-like point, but in a more updated way. Second, his wings needed to be in his shoulders as they originally were in G1. To stay true to the realistic nature of the Classic Series, the deco will be more silver than red, but with multiple red cues to connect to POWERGLIDE’s original look.
Bill chose ONSLAUGHT because he always loved his design and the two large signature barrels on the character’s back. The design team worked to retain that very characteristic silhouette in this new Ultra scale version of ONSLAUGHT. In choosing a vehicle mode, design went with a cool S.W.A.T. Urban assault vehicle to set it apart from the tanks in other TRANSFORMERS product lines. The vehicle choice and theme lent itself to the creation of a riot shield in robot mode. The final version does an excellent job recalling the G1 characters the design team grew up with.
All images below are from Actoys.net