Are you talking about that rabbit... uh, Chainsaw Rick? He's just a child, both physically and mentally. He may seem noisy, but he has actually wanted to have a place to call home. You can tell from how he always proclaims his love for Rabbie... His love is essentially a brother's attachment to his sister. See, he's basically treated this place as his home ever since he got on board, and he has even decorated his room. As for Rediesel Wrench, maybe he'll only consider whether or not to go there after he remembers it. After all, this child is extremely ambitious and focused; once something catches his eye, he'll even forget what he's previously holding.
—Vice

Diesel! Argh! The most disgusting drink, but I found it to be the best drink once I put it down the throat! And it saved my life! I was thrown into an underground boxing ring as soon as I learned how to walk... They said Chainsaw Rick owed them a ton of money! Are they kidding me? I couldn't even speak properly before I arrived there, how could I possibly borrow money from those old fogeys? They forced me to work for them as a sparring partner, and I was beaten like a punching bag by those boxers! They thought that suffering would make me yield. What a joke!
The only delicacy there was diesel, which I drank on the sly! Hahaha! It's really strong stuff, and it sends a powerful hit straight to my head, just like the first time I saw Rabbie! Haha! So now you understand why my head is like how it is now? I'll make do for now, but I'll find a way to grow a rabbit head one day for Rabbie!

Mother? What the heck is that! Oh! Are you asking about my ma? She should be dead! Although I'm not sure if that person was my mother, she was the most likely candidate I'd seen. After all, I had not met many adults back then! However, I only met her once and she fed me diesel! Diesel!
Chainsaw Rick hasn't seen her ever since then, but she left me some diesel! It was my birthday gift. I had never received any birthday gifts before, but I knew it once I received it! As for my father... what is a father actually? My father couldn't possibly be that bunch of male adults, right? There were just too many of them, so I don't know which one you're asking about! If you're asking me which one of them is related to me, I have no idea! Maybe diesel is my father? Hahaha!

In the end, I fought a match. The old-fogey of the underground fight club made me fight a really, really tall guy! Haha! They didn't know that Chainsaw Rick had some diesel! I sipped on my diesel while punching him! Hit him under the knees! I terrified them and they finally let me go!
My face was all mangled up. But appearance means nothing to a man! Anyway, everyone saw my fists after that match!
Later, I was caught when I tried to rob Rediesel Wrench, but when those bigwigs heard my story, they cried so hard and insisted that I had to join Rediesel Wrench! I don't like such a clingy atmosphere, but there are many strong people here, and I'll be invincible if I can become stronger!
Anyway, I guess I now have a place to call home too.