Dweezil Zappa (born September 5, 1969, in Los Angeles, California) is a heavy metal guitarist. He is the son of Gail (Sloatman) and Frank Zappa and the second of four siblings. Dweezil's older sister is Moon Unit, and his two younger siblings are Ahmet and Diva Zappa.
Dweezil's registered birth name was Ian Donald Calvin Euclid Zappa, although this only occurred because the hospital at which he was born refused to register him under the name Dweezil.