It looks as though Tailgate may find himself in the Kreon universe. When signing up for
Hasbro's Kre-O Nation members are asked to create a username using three fields, a descriptor, a Transformer character name, and a number. All of the Transformers characters listed in the second field have Kreons with the exception of one, Tailgate. Given his popularity thanks to his role in IDW Publishing's
Transformers: More Than Meets The Eye comic series it seems likely a Tailgate will receive the Kreon treatment as some point in the future.