Explosive bulbs are always attached to a platform. They can be seen on the ground, on the walls, or on the ceilings. When the heroes hit them, they trigger certain events, such as moving a platform or creating a geyser, which can be used to lift the heroes. In Rayman Origins, they mainly appear in the jungle areas like Jibberish Jungle and Ticklish Temples, but they can also be seen in the Moody Clouds. In Rayman Legends, they appear in levels from the Back to Origins painting.
Explosive bulbs as seen in It's a Jungle Out There, which are used to make this mountain monster open its mouth.
An explosive bulb from Moseying the Mountain, which is used to make a platform rotate.