This tech makes use of King K. Rool's "No Crown" animation. Through executing a Short or Full Hop at a specific point with Side Special, it's possible to execute different jumps. Crownless Bounces are very, very powerful when combined with Crown Landing. It actually turns them into incredible movement options! The pivot jump can allow for some very useful platform control, as K. Rool will land at the perfect time for his landing lag to cancel on Battlefield's side platforms Due to the utility of this maneuver, it's been dubbed Crownless Bouncing.
It is also possible to Crown Bounce via C-Stick Macro Specials while not having the crown at all (thus using the crown pickup animation). This is known as a C-Stick Macro Crownless Bounce. This allows for a wavebounce or pivot jump depending on the inputs; the traditional input causes the pivot jump, while inputting two forward or backward inputs instead of the traditional way causes the wavebounce to occur. While the pivot jump is a movement mixup at best (most notably for back aerial meteor smashes), the wavebounce is notable for how far it sends K. Rool back. This aids him in zoning, being able to follow up with a wavebounce into Blunderbuss after throwing the crown out.
However, Crownless Bouncing on its own comes with risks. The "No Crown" animation lasts 36 Frames: there is a lot of lag to this when it's executed. Thus, Crown Landing must be executed correctly whenever it is being performed, or there is a very real risk of being punished. While options can be buffered through it, it's not necessarily helpful when an opponent is on the offense. This means that the technique on its own is limited to slower matchups or situations where opponents can't stop him.
Crownless Bouncing allows for great use of up tilt to anti-air, or control the top platform if the Pivot Jump is used. The wavebounce allows for many funky approach or retreat options, such as the aforementioned Blunderbuss zoning. It can also allow for approaches with neutral attack, instant dash attack (forward + forward on c-stick), or the previously mentioned up tilt. It can also function as a tomahawk option, allowing for interesting reads and plays.