The Elephantine Comfort Disrupter is a random award for beating him, and possibly one of the worst, it varies from time to time and it does work but I doubt he got it. But there is a more common way to go about it, you can get the Elephant Rabbit Dimensional Swapper. Simply go to the next dungeon, you wont be able to enter but you will find the recipe engraved on a wall nearby. I can't remember the ingredients but I'm pretty sure there's a Copper Horse Lute in the recipe, and a few Potions of Author Revenge. It's a complicated recipe so your character will forget it in 15 minutes, but you can just pick up the recipe, take note of the ingredients (write it down or something) and collect them. Then go learn the recipe again and head to the Veggismith in the nearest town or use your own Veggismith if you got one. Once you have one, purchase a Pet Rabbit from any old store that sells one and use it in the room with the Elephant, what will happen is a Rabbit will take his place and you will acquire a Pet Elephant. You should be able to walk past the rabbit freely, and you can do whatever the hell you want with the Elephant.
But I have a bit of an issue, I'm in the Sky Fortress of Anger, one of the four Emotional Fortresses, and I keep running into these Stone Heli-Mechas, and fuck me sideways with a watermelon these things are hard as nails. I'm fairly convinced that there is some way around them I'm missing, because if I try to fight them head on, they just wreck me, and fleeing from them near impossible even though I got a Kitty Pirate in my party. Any help?