Double Jump is an ability only usable by Bass introduced in Mega Man & Bass to differentiate Bass' gameplay from Mega Man's. This technique consists on jumping from mid-air, after already jumping or when falling. Double Jump can be done after a Dash Jump to go extra far, although the momentum is lost then. This skill is carried over Rockman & Forte: Mirai Kara no Chousensha, but this skill was removed in Mega Man 10.
In Mega Man Maker, it functions exactly how it worked in the original games. When used, Bass has a visible white wave produced whenever he does the double jump. This ability is optional and is disabled by default due to this skill being removed on Mega Man 10. Double Jumping can be enabled and disabled in the Level Settings menu.