Grenade Eggs, non-canonically called Rear Eggs in Super Smash Bros. Ultimate, are explosive green eggs which Kazooie can learn to use from Jamjars within the Pine Grove in Banjo-Tooie. Only 25 grenade eggs can be carried (unless the "EGGS" cheat is activated, which allows 50 to become the maximum) and Kazooie must pause in between each firing (as opposed to Blue Eggs, which allow three to be fired in quick succession), but they are one of the most powerful types of eggs (tied only by Clockwork Kazooie Eggs) and arguably the most useful in the game. When selected in the egg selection, a military drum beat can be heard.
Aside from dealing heavy damage to enemies and bosses, not to mention the splash damage which can kill bad guys without a direct hit, Grenade Eggs are useful for destroying rocks and breakable walls, as well as harder enemies like Sput Sput and Fruity. Be careful when using Grenade Eggs as the resulting explosion can damage Banjo and Kazooie if used at close range and can send them flying backwards or even sometimes right off the ledge of a nearby cliff.
Jamjars' Rhyme[]
- For blasting things
- these eggs were made,
- don't stand close when
- you fire a grenade!
Eggs in the Banjo-Kazooie Series 
Abilities from Banjo-Tooie | Spiral Mountain (Pre-learned): | Beak Barge · Beak Bomb · Beak Buster · Climb · Dive · Egg Firing · Feathery Flap · Flap Flip · Flight · Forward Roll · Jump · Peck · Rat-a-tat Rap · Shock Spring Jump · Stilt Stride · Talon Trot · Turbo Talon Trot · Wonderwing |
|---|---|
| Isle o' Hags Worlds: | Airborne Egg Aiming · Beak Bayonet · Bill Drill · Breegull Bash · Breegull Blaster · Claw Clamber Boots · Clockwork Kazooie Eggs · Egg Aim · Fast Swimming · Fire Eggs · Grenade Eggs · Grip Grab · Ice Eggs · Split-up · Springy Step Shoes · Sub-Aqua Egg Aiming · Talon Torpedo |
| Banjo-only: | Pack Jump · Pack Whack · Sack Pack · Shack Pack · Snooze Pack · Taxi Pack |
| Kazooie-only: | Glide · Hatch · Leg Spring · Wing Whack |