Okay here are the quotes I've gathered for Kuwabara. Just like Yusuke there are some books that are skipped. So here are the ones that have been collected so far:

"Her again! Cute...but dangerous!"-Vol. 4

"So what am I, snake spit?"-Vol. 4

"Dare I say it...flower power?"-Vol. 4

"Granite-butt put himself back together!!"-Vol. 4

"Hah! Monster beastie shishkebabs on the hoof!"-Vol. 5

"Bit of glutton, ain't ya, puss-puss?"-Vol. 5

"I'm not tossing the ball to the reliever and going to the dugout to sip gatorade."-Vol. 5

"Like it or not fuzz butt hell's waitin' for both of us!"-Vol. 5

"The thing Hiei gave you! That'll dump us both into another demonic mess!!"-Vol. 6

"Patience, lady of the snow!! I'll save you! So I swear!!"-Vol. 6

"Stuff it, you pug-uglies! Outta my way! I'm burnin' with romantic fury!!"-Vol. 6

"Gawd... Can't decide if I'm impressed of grossed out!"-Vol. 6

"You look pretty shaky, and I hate to think why."-Vol. 6