@Lightmare I still need Rust Dust, Stormclash, Dustup, Fireflight and Powerglide in 3 star regardless, because 2 star characters don't count towards unlocking Combiners. From reading the text of Rust Dust's skill, it looks like a powerful Damage inflictor, but I won't know for certain until I can try it personally. Stormclash and Skyburst do fairly decent damage. Dustup's ability may be useful if upgraded, but as mentioned priorly, I only do that for 4 star characters, so at the moment, it's not good for anything. Actually, Prime team has no problem with DPS. I didn't mention that there's a 2 star level 30 Ultra Magnus on that team. Between him, Prowl and Jazz, if I get them close enough to enemy defences, expect them to vanish in a mass of explosions! A 4 star Ultra Magnus is on my goal list, to make Prime Team even more powerful. He's also been assigned to base defense, so would improve that area of the game as well if I am able to unlock him. I am also looking for a 4 Star Mirage. I currently have a 2 star level 30 Mirage assigned to base defense. But that was also another case of failed unlocking attempts.