Members: Iñigo Arrasate, Eduardo Mancebo, Jokin Erdozia, Apraiz, Ajuria

Ume Gaiztuak (in Basque, Naughty Boys) was punk group from Lekeitio area (Basque Country) in the early 90s.
The band was made up of several musicians experienced in famous local combos, such as RIP or Etsaiak. In fact, Jokin Erdozia was the founder and first bassist of the group Etsaiak and "Portu" playing guitar was the bassist of the legendary RIP.

First demo cassette: Ume Gaiztuak ‎(1993)
Second demo cassette: "Testamentua" (1998), recorded after Portu death in 1997.

Members: Iñigo Arrasate "Iñigito Txapelpunk" (vocals), Jokin Erdozia (bass, vocals), Portu (guitar, vocals), Apraiz (drums), Ajuria (vocals), Txabi.