Kirby (SSBU)/Up throw
The Air Drop from the Ninja ability, which creates a small explosion on landing. It's among the 10 strongest up throws in the game, dealing 10% damage, having high base knockback and decent knockback scaling, allowing it to KO middleweights at around 160% with no rage. Since Kirby jumps torwards the blast line to perform it, he will immediately land on platforms if he is below them. Its great knockback and its ability to land on platforms make it a reliable and useful KO throw. Just like Meta Knight's similar up throw, it has a collateral hitbox that deals 7% with similar knockback to the throw and can hit bystanders.
As with Brawl and Smash 4, Kirby can also perform the Omnigay with his up throw. Should he have a C4 attached to him or have an opponent hold an item such as a grenade, Kirby can up throw the opponent, send him/her to the blast zone and get them immediately KO’ed while Kirby remains unharmed. This works regardless of percent. While difficult to perform in singles due to precise knowledge on when the object would be detonated and the technique being limited to a few characters, if his team partner is playing Snake, it can be performed more easily due to Snake being able to plant more C4s on Kirby for greater leeway.
Throw and Hitbox Data
This assumes there is no platform above Kirby when he starts the move.