Rogrog knew Elmu and friends?

[Warmmedown]

Spoiler-free title

Did roglerogle know Imu and friends? Would Rogeleegoogleerog heading towards Raftel be enough to make Imu or the Gorosei visit him?

 

[Warmmedown]

 

[SSJ2]

The running theory is that Imu is Axe Hand Morgan.