Morphball/Springball/Spriderball

MORPHBALL

The morph ball is the first upgrade you get in every metroid game

The morphball can carry bombs and power bombs the only weapons the morphball can use

SPRING BALL

This item is used to jump while in morphball mode

a nice alternative to bomb jumping

SPIDER BALL

This item is useful to climb up magnetic rails or walls in general although your speed greatly decreases