Trundle's recall animation is the famous "Winter is Coming" pose from the television series Game of Thrones.
Definition of the verb "to trundle" is "to move along by or as if by rolling"; or rather, "to roll", sounding similarly to his species as a "troll".
The area for Frozen Domain is currently, not counting global abilities, the largest AoE in the game.
Since his introduction, Trundle went nearly two years before being subject to balance changes to any of his skills or stats. He was finally given changes in the Shadow Isles patch in late October 2012.
Trundle received a visual upgrade across all skins including a new Classic skin.
His existing, although upgraded classic skin was made available in the store for two weeks before being retired into the Legacy Vault. Players who owned Trundle before his rework received Traditional Trundle for free.
Trundle's line "The Trolls are going to war" may be a direct reference to a quote by Treebeard in The Lord of the Rings: The Two Towers: "The Ents are going to war".
Traditional Trundle's quotes make several references to internet "trolls", a derogatory term for someone who intentionally annoys or offends another person.
Traditional Trundle's"Don't hate the player, hate the club that's smashing your face!" could be also a reference to that meme. It could be also a joke from Riot implying that players focus their hate on champions, not on their player, calling for nerfs on the forums.
Traditional Trundle's first joke, "How much you wanna bet I can whack you from one fountain to the other?", is most likely a reference to the movie Napoleon Dynamite, in which the character Uncle Rico at one point asks, "How much you wanna make a bet I can throw a football over them mountains", while reminiscing of his past in football.
Trundle is currently in an alliance with Lissandra.
His club, Boneshiver, belonged to Lissandra. In exchange for the true ice club, Trundle said that he would fight alongside the Frostguard army with an army of trolls, although it doesn't seem he would keep his end of the bargain.