The elephant beast man missed his attack as Kabrakan vanished from his location. Adrian continued with this to buy time as he needed to make sure that Kabrakan is not killed. His soulbounds are the ones getting the brunt end of the deal though as the summoned ones are already killed.
The fact that the elephant beast man could kill Dodu, Charon and Saena terrified Adrian to a great degree. Dodu should have been impervious to physical attacks, but he got turned into an inconsistent puddle of black goo. Charon got separated into numerous bones while Saena died from one tackle from the elephant beast man.
The elephant beast man is currently in rage mode which is why he attacks those in his way indiscriminately. He does target Kabrakan for some reason though and his defenses are also boosted to such a large degree that they can barely scratch him. Even Sirius or Kanlaon could not damage him greatly and only posed as a short hindrance.