I think maybe Ukyo sine she held one for 10 YEARS over something that happened when she was 6.

I think Ryoga's bad with Grudges but more so with wanting to blame EVERYTHING on Ranma. Sometimes Akane likes to blame him alot too, but no one even comes ANYWHERE NEAR close to Ryoga. Heck, it starts to rain and he gets wet and its 'RANMA THIS IS ALL YOUR FAULT!!!'

Ukyo is the one who I think is worse at holding actual grudges. She held one for 10 YEARS!!! They were 6 for cryin out loud! I wouldn't want to do anything to piss her off. Akane maybe quick to anger, but atleast she's also quick to forgive , no matter what the crime in question might be.

even Ranma helps him he still fights Ranma even at the smallest stuff like stealing his food...

Eh, well Ryoga seems to just find a buncha different things to hate Ranma for and other than the pchan thing, he seems to forget what he was mad at Ranma for in order to hate him for something else fairly quick. Ukyo on the other hand will hang onto that ONE thing for 10 friggin years. Still., They BOTH have major issue when it comes to holding grudges. Both could use therapy in my opinion, but thats just me.

Ukyos bad but she improved some, but Ryoga gets worse.

Maybe Ryoga, I think. But both can be pretty bad when they want to.

Ukyo did hold one for a long time, but at least she got OVER it.

Ryoga.
Though Ukyo can hold A REAL LONG ONE TOO.
Yes she got over it but Ranma had to say she was cute first. And I think everyone knows what happened after that.

both

hmm hard to pick

personally I think its about the same.
Any sign or talk about ranma and akane involved in any type of intimacy. Both Ryoga and Ukyo act quite similar too. Its either Ryoga calling Ranma a cad and trying to kill him for, in ryoga's mind, forcing himself on Akane, or Ukyo accuses Akane of either trying to seduce Ranma, forcing herself on him, or forcing him to say things like when he ruined her sauce and admits it she said to was Akane that was making him say it.

So I think the another question is which is more delusional // or has a most altered Point of view.
Neither Ukyo or Ryoga is really stupid, I just think they choose NOT to see things they don't want to. Basically ignoring the truth, esp. when it comes to ranma and akane.
*between these two*
Add characters like the kuno's in the mix and well they'd be the only characters you look at>"

Ranma really did kick Ryoga into the spring of drowned pig, but it was Genma that ran away with Ukyo's cart, not a 6 year old kid with no idea what's goin on. And Ukyo didn't let that grudge go until Ranma said she was cute, so her ONLY reason for letting go of her grudge was because she thought their was a possibility of marrying Ranma, thus she had an ulterior motive and didn't JUST get over it, and she blamed a 6 year old ranma for somethin he didn't do, as soon as Genma pointed the blame on his son Ukyo swung her spatula at Ranma when she should of had enough sense to keep it aimed at Genma.

Both of them