Jet

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Overview

Jet is one of the most commonly used abilities in KSS speedruns, utilized in almost every sub-game and category.

Moveset

Grounded Moves

Tap Kick Quickly press and release Y jet ability	Disjointed short kick that can hit twice Only available on ground Used for bossfights. (EX: Heavy Lobster, Whispy Woods, and Bonkers fights)

Jet Kick Hold Y, release before full charge jet ability	Kirby jet dashes forward and ends with a kick Has a fairly short ending animation, though still slower than jet dash chains Has a more disjointed hitbox than the midair jet moves, making it useful for charging through enemies with higher health (Knuckle Joe, Sword Knight, etc) Also can be used for spacing setups in certain areas (EX: mecheye screen 2)

Charge Moves

Charging Hold Y jet ability	Charging stance, if held for ~2 seconds Kirby will become fully charged Can be cancelled by shielding, leading Kirby to return to normal ground state Can be cancelled by jumping, leading kirby to Midair Neutral state Charging can be performed in the air if kirby is in the Midair Neutral state where it can be cancelled by hovering

Full Jet Charge Hold Y until full charge and release jet ability	test2 test3

Jet Cracker Hold Y until full charge and release, Repress Y during jet dash jet ability	test2 test3

Jet Suplex Hold Y until full charge and release while holding Up/Forward/Down when close to enemy jet ability	test2 test3

Midair Dash Moves

jet Press Y after running and jumping jet ability	test2 test3

Midair Neutral Moves

jet Tap Y in Midair Neutral state jet ability	test2 test3

jet Hold Y and release before full charge in Midair Neutral state jet ability	test2 test3

Advanced Techniques

Cancel Charge

Kirby can store his Jet charge by jumping, sliding, guarding, or climbing up a ladder in the middle of charging Jet.
Capsule J cannot cancel by sliding (he will jump instead).

Carry Momentum Entering Water

By activating a tap jet (no dash) in the air while entering water at the same time as hitting a wall, the tap jet's X-speed will be maintained underwater.
Carrying X-speed is frame-perfect.
Y-speed will also be affected if there is wind blowing up in the room (ex. Halfmoon).
Carrying Y-speed has more frame leniency, but is still a tight window.

Avoid Unblockable Attacks

While charging Jet, Kirby is immune to attacks such as King Dedede's inhale or Combo Cannon's lasar beam.
This also happens when inhaling without an ability.

Technical Information

Moveset Specifications

Move Name	Button Action	Application	Range	Power	Attributes	Knockback	Breaks Blocks?	Goes through...	Other Notes
Exhaust Gas		Projectile	Far	6	Sizzle	Strongest	Yes	Enemies	Appears in various Jet moves
Store Power	Hold Y		Self						Avoids unblockable attacks
Save Stored Power	B / Down + B / L / R (all on ground)		Self
Jet Kick (weak)	Press Y (on ground)	Body	Close	14	None	Medium	Yes		Emits exhaust gas
Jet Kick (strong)	Hold Y for a moment, then release (on ground) Helper only: Dash + Y (on ground)	Body	Close	22	None	Strongest	Yes		Emits exhaust gas
Jet Heading (weak)	Press Y (in air)	Body	Close	14	None	Strongest	Yes		Emits exhaust gas
Jet Heading (strong)	Hold Y for a moment, then release (in air) or Dash + Y (in air)	Body	Close	22	None	Strong	Yes		Emits exhaust gas Invincible (Helper only)
Jet Dash	Hold Y until max charge, then release	Body	Close	30	None	Strong	Yes		Emits exhaust gas Invincible
Jet Cracker	Press Y, hit an enemy, or hit a wall while in Jet Dash	Projectile	Far	45	None	Strong	Yes	Enemy/Wall	Invincible
Jet Blow	Release Y near enemy + left/right (on ground)	Thrown Enemy	Thrown	∞					Scores twice
			Hit	60
Diving Rocket	Maximum charge + Release Y near enemy + left/right	Thrown Enemy	Thrown	50					Emits exhaust gas
			Hit	80
		Body	Close	30	None	Strong	Yes		Can go through walls
Hover	B (in air)		Self						Resets accumulated Jet power
Ultra-Jet Jump	B (in air with max charge)	Body	Close	200	None	Strongest	No		Invincible Instantly kills mid-bosses Ineffective against bosses
		Explosion	Far	26	None	Strong	Yes	Enemy/Wall

About Charge Value

When charging jet, the charge value increases by 1 every frame in RAM address 0x36C0.
The initial value of this address is 0, and this value stops increasing when Kirby stops charging. This value will continue to increase while Kirby charges, even at max charge, and will stop at 32767.
Below is a table that shows what RAM value corresponds to the Jet charge state.

Charge State	RAM Value
No charge	0 - 5
Mid charge	6 - 40
Max charge	41 - 32767

Glitches

Simultaneous Up+Down Bug

See KSS:Glitches#Simultaneous...

Diving Rocket

Score Bug

Defeating an enemy with Diving Rocket will reward double the Score originally intended.

Collision

Diving Rocket will ignore wind and water currents during its animation. This will last until you land and bounce backward.
Diving Rocket can also allow Kirby to clip through terrain during autoscrollers (See KSS:Glitches#Wallclips.

Other Information

Diving Rocket Collision

Diving Rocket has three hit detections: Kirby himself, the enemy he is holding, and the flames behind him.
Kirby's body is the same as Jet Dash, and the flame behind it is the same as when it is charging power.

Capsule J Air Jump

Normally, Capsule J cannot jump in the air. However, he can jump in mid-air while he is charging power.

Dash Jet Kick

Limited to Capsule J, you can perform a strong Jet Kick by pressing Y while dashing.

Capsule J Mid-Air Jet (Strong)

Capsule J has invincibility when using Strong Mid-Air Jet. This also applies if Capsule J bounces off a wall.