This article focuses on the interactions between Fries and Gelatin. Fries and Gelatin are shown to be friends since Yeah, Who? I Wanna Know, but their friendship can be a bit off due to Fries being a little grumpy.
Episodes suggesting a friendship
In BFDIA 6 Deleted Scenes, Fries let Gelatin use his Anti-Yoyler.
Episodes suggesting a conflict
In Insectophobe's Nightmare 3, Gelatin ate one of Fries' fries. Gelatin, disgusted, said that his fries taste like they over a year old. Fries yelled at Gelatin.
In Welcome Back, it is revealed that Gelatin has eaten more of Fries' fries.