There have been a lot of rumors and theories surrounding the plot ofAvengers 4over the last few weeks and some of them make a lot of sense, while others are recycled fibs that end up getting debated over and over again. However, there is a new fan theory floating around that makes complete sense and involves the appearance of Kronos ofThe Eternalsin the conclusion toInfinity War. As with all fan theories, we’ll take this one with a grain of salt for the time being, but there are some pretty interesting bits of evidence to support this newAvengers 4idea.

At the end of last month, Jim Starlin participated in a Q&A session at Puerto Rico Comic-Con where he revealed thatAvengers 4would include another one of his characters.Starlin created Thanos, Drax the Destroyer, and Gamora, to name a few, which got fans excited about thinking about who could be next. In addition to the aforementioned characters who have already appeared in the Marvel Cinematic Universe, Starlin also created Lady Death (who the Russo Brothers have already ruled out), A’lars, Eros, aka Starfox, and Kronos as well as many more characters.

The Eternalsmovie is said to be in development by Marvel Studios and there was a subtle hint at the project inInfinity WarwhenRed Skullmentions Thanos' father A’lars. That hint is one of the many ways that the MCU has been teasingThe Eternalsfilm. It was also recently announced that Matthew and Ryan Firpo are writing the script for the project, which means that it’s further along than once thought. A’lars may seem like the go to character from Jim Starlin that will make it intoAvengers 4, but Kronos makes even more sense.

Kronoshelped to build Titan and he is also the cosmic master of time in the Marvel universe. That last bit is the important part. It has been heavily reported thatAvengers 4will include time travel as well as other dimensions that theQuantum Realmwill help explain. If Tony Stark and the gang are out altering the fabric of time, it would be pretty logical to see Kronos, who is also Thanos' grandfather, make an appearance in the film, creating some awesome fan service as well as further setting upThe Eternalsmovie.

We’re still pretty much a year away from getting any sort of confirmation about Kronos' involvement inAvengers 4, but the evidence does seem to suggest that he could very well be making at least a small cameo like the one that Red Skull made inInfinity War.Ant-Man 2will further explore the Quantum Realm, which should shed some light on how it will be incorporated intoAvengers 4, and that movie opens July 6th in theaters. Additionally,Captain Marvelopens in March, so we will have a better understanding of the final installment of Phase 3 of the MCU at that time. you may read more about the Kronos theory atMCU Cosmic.