Caliban, a metalcore-band, was formed in Hattingen, Germany in 1997 under the name Never Again. After 6 months of playing together, the band recorded their first two songs for a compilation, which was never released. The songs were sent to several record labels, and Lifeforce Records was the first to offer the band a record deal. The band's first self-titled MCD came out in the summer of 1998. To promote the CD, Caliban played many shows all over Europe and a few support shows for bands like Morning Again, Earth Crisis, and Cro-Mags.
After their European tour, in 1999 Caliban entered the studio to record their first full-length, entitled Small Boy and a Grey Heaven. The CD received favorable reviews in many big zines and many smaller hardcore and metal zines. The band was described as a mixture of Slayer, Poison the Well, and Hatebreed.
Vent came out in April 2001. Vent was released by Imperium Records and by Howling-Bull Records in Japan. Shortly after the release, Caliban was offered the opportunity to tour Japan to play the Beast-Feast 2001 in the Yokohama Arena, sharing stage with bands including Slayer, Pantera, Machine Head, ...