Jamjars

"Drill Sergeant Jamjars reporting f'duty, sir!"

- Jamjars

Jamjars is a mole and the brother of Bottles. Unlike his sibling, Jamjars is an assertive drill sergeant and one of the main supporting characters in Banjo-Tooie, where he takes over Bottles' role of teaching moves to Banjo and Kazooie, both together and separately.

Banjo-Tooie
In Banjo-Tooie, Jamjars is found in hatches that are located around the Isle o' Hags and its levels. Jamjars can first be encountered at Mayahem Temple, where he learns of Bottles's from Banjo and Kazooie. As such, Jamjars agrees to help the duo on their adventure by teaching them moves along the way. Whenever Banjo and Kazooie collect a type of item the first time, even before meeting Jamjars, he explains the item and its purpose to them. Furthermore, Jamjars allows Banjo and Kazooie to use his network of silos to quickly travel between areas.

Unlike Bottles, Jamjars charges the duo Musical Notes before teaching his "advanced techniques" to them. Whenever Jamjars teaches a move, he marches to a military theme, and he rhymes as he explains the move to Banjo and Kazooie. After this, Jamjars yells "Dismissed!" and jumps back into the silo, which has its light change to green. Occasionally, after Jamjars teaches a move and opens the silo to leave, the hatch closes before before Jamjars can enter, causing him to hit his head. Jamjars crawls back into the silo and opens it once more to grab his hat. If the player presses while Banjo and Kazooie stand next to a green-lighted silo, Jamjars quickly recapitulates how to use the move that the duo learned at that Silo.

Similar to Bottles, if Banjo or Kazooie's health bar is low while they learn a move from Jamjars, he provides "rations" to instantly refill it. If Mumbo Jumbo tries to interact with Jamjars, he tells him that he "only teaches moves to bears and birds" and calls Mumbo a "freak".

Oftentimes, when Banjo and Kazooie read a signpost or if they try and enter an off-limits area, Jamjars talks to them (as shown from his speech icon), although without being physically present. Jamjars' head icon also represents the Miscellaneous section of the jukebox in the bar, Jolly's.

In the ending, Jamjars arrives at the party at Bottles' House, expecting to have a party, only to find that Klungo had eaten all the food. He then goes to Cauldron Keep with his friends to play a game of kickball using Grunty's head.

Jamjars is playable in the multiplayer shooting minigames. He has eight Honeycombs and, while being the second slowest character (with the first one being Gruntilda), is still a small target, making it hard to land a hit on him.

Banjo-Kazooie: Nuts and Bolts
In Banjo-Kazooie: Nuts & Bolts, Jamjars is shown to have become the DJ of Spiral Mountain F.M. Through a radio machine, he tells Banjo and Kazooie that it has been 10 years since they were both invented and saying that they're "all fat and washed up" now.

Moves taught
Jamjars teaches Banjo and Kazooie a total of 24 different moves throughout their adventure.

Trivia

 * In Banjo-Kazooie, when Banjo and Kazooie come to one of Bottles' first molehills in Spiral Mountain, Kazooie refers to Bottles as "Jamjars". Jamjars is also an incorrect answer for Bottles when Grunty asks a trivia question in Grunty's Furnace Fun.
 * Jamjars' military behavior and voice were based off on Duckworth Chant, made known by the 1987 film Full Metal Jacket.
 * While in the original release of Banjo-Tooie Jamjars' training songs rhymed with the buttons that needed to be pressed in order to use the moves taught, in the Xbox Live Arcade release, due to the replacement from to, some do not rhyme.