After the death of their teammate, Pyrrha Nikos in "End of the Beginning", the three remaining members briefly formed Team RNJR with Ruby Rose after her own team was fractured. After Ruby's old team was reformed, Jaune, Nora and Ren collectively went as Team JNR.
Flower Power (Nora + Ren) - The specifics are not known, but it is named as such because, as Jaune describes it, "Ren brings the flower, Nora brings the power." The full version of the team attack is revealed in RWBY: Amity Arena, where Ren stuns multiple enemies, then Nora launches him and delivers a powerful attack on them.
Arkos (Jaune + Pyrrha) - Described as "that thing, when we take our shields...?" by Jaune. The name is a portmanteau of the pair's last names, Arc and Nikos. The full version of the attack is revealed in the Chinese mobile game, in which Jaune and Pyrrha ride their shields and land on an enemy from opposite directions before performing a X-shaped slash with both their swords.
Pomegrenade (Pyrrha + Nora) - The team attack was first revealed in RWBY: Amity Arena and is purely an in-game team attack. As its card info states: Jaune thought up of this team attack during the last second in order for them to fend off the Death Stalker that Jaune and Pyrrha come across in "Players and Pieces", wherein Pyrrha launches Nora upwards with her shield and thus, making Nora land on a designated area alongside Maginhild. After Pyrrha's passing, Jaune had to take her place as seen in "The Greatest Kingdom".
Hua Mulan, upon whom Lie Ren may be based, disguised herself as a man in order to serve in the army in place of her aging father.
JNPR (Juniper berries, blue) is a possible allusion to Rooster Teeth's other series, Red vs. Blue, when compared to their rival Team RWBY (Ruby, red gemstone).
Juniper bushes are also known to turn bright yellow, which helps to explain its connection to leader Jaune (as with Ruby to RWBY, Cardin to CRDL, and Coco to CFVY).
Team JNPR's members' fighting styles are based on archetypal warriors from a different culture: Jaune's is Frankish/Norman, Pyrrha's is Greco-Roman, Ren's is East Asian, and Nora's is Nordic.
On November 6th, 2014, Monty Oum discovered that he was allergic to juniper.
On The Staff Of Charon during Red Vs Blue Season 13 Episode 6, Team JNPR is one of the names scrolling on Hargrove's screen, along with RWBY.
Following Volume 3, the team has been referred to as Team JNR in merchandise and in DLC packs for RWBY: Grimm Eclipse. The title is presumably the internal name for the group and has been adapted as the group's title.