Who's most jealous of naruto?

[iSpeak the Truth]

Sasuke is jelly :y

Naaaaa....annoyed, but never jealous.

 

[Awkward Linguist]

I don't think any of them have shown any signs of jealousy so far. Kiba was kinda angry because Naruto had surpassed him but he wasn't jealous, just angry so that is why he seeked for training with Kakashi sensei.