There are several new characters being introduced in Pacific Rim: Uprising and there appear to be even more returning characters than we previously thought.
It will certainly need to be something of Jaeger scale, but it could be something entirely new.
Alternatively, we could be right about the idea of a character sneaking past the warning sign, but wrong about who is the one doing it.
It’s not even entirely clear that the kaiju will be the ultimate enemy of the movie.