So out of the three of them, who is actually the strongest. Carrera posses the ability to warp gravity and I will ignore her god tier gun for the moment. Testarossa uses a instant death wave with a 99.99% chance of death with a small chance a person may survive. Ultima mesnwhile uses a large fireball or supernova? I'm not really sure as in the WN, she basically wiped out the entire airfleet just by blowing one up at the start of the battle. Naturally the three have very different abilities and after they evolved to Demon Kings, they were capable of challenging Diablo who was a Demon God at the time if it was 3v1. So really out of the three of them, who stands at the top and speaking of that. Is it possible for the three of them to reach Demon God like Diablo with Rimuru's help or are they stuck where they're at now.