Each class has a Class advantage over each other, so it is smart to plan out your squad. Bots can also interact with each other by Synergy Bonuses. There are currently three Transformers universes from which these characters come from: Generation 1/Generations (with designs based on toys from various toylines) the Movieverse (live-action film series), and Beast Wars.
Bots vary in star rarity, from 1-Star to 5-Star. Each Bot has a Rating that can be increased by leveling and ranking up the Bot. Each Bot has three unique Special Attacks, as well as a Signature Ability that is awakened from getting a duplicate.
These Shattered Glass Bots are unplayable variants of the regular Bots can only be seen in dialogues in Special Missions. If you are facing a regular Bot in these missions as either bosses, you are technically facing a Shattered Glass Bot.