If you run off the ledge and immediately Forward-B into the lip, you'll leave the Bike near the edge.
People have to move toward you in order to recover. You can often get away with the mix-up of "aerial vs. airdodge," where you either swing at them as soon as possible, or airdodge and start holding toward the stage. For a lot of characters, if they do an attack to try and swat you away or they airdodge to avoid your potential attack, you will have frame advantage and can hit them with whatever.
If you're going deep with an aerial, the Bike jump is higher if you lean back while on the Bike before jumping. That allows you to go deeper than normal before attempting to recover.
Wario's ledgeguard game, preventing people from getting off the ledge safely, is quite good. Things like N-Air, D-Air, Neutral-B, and D-Smash cover multiple options. If you have the Bike on the stage, you can get your hitboxes to linger in one place longer than normal, which works especially well for Waft.
People have to move toward you in order to recover. You can often get away with the mix-up of "aerial vs. airdodge," where you either swing at them as soon as possible, or airdodge and start holding toward the stage. For a lot of characters, if they do an attack to try and swat you away or they airdodge to avoid your potential attack, you will have frame advantage and can hit them with whatever.
If you're going deep with an aerial, the Bike jump is higher if you lean back while on the Bike before jumping. That allows you to go deeper than normal before attempting to recover.
Wario's ledgeguard game, preventing people from getting off the ledge safely, is quite good. Things like N-Air, D-Air, Neutral-B, and D-Smash cover multiple options. If you have the Bike on the stage, you can get your hitboxes to linger in one place longer than normal, which works especially well for Waft.