The Keybird, also known as the Keyzer is one of wario's allies in Wario Land 4. keybird is a ghost-like creature that has only appeared in Wario Land 4. In Wario Land 4 he will follow Wario untill the next level. The Keybird is sleeping until Wario comes to wakes him up. This article is a . You can help My English Wiki by expanding it.