In October, 1986, they recorded their first demo, following it up with a second in May, 1987 (both of them were later included on single cassette). They opened for international touring acts Pretty Maids, Helloween, and U.D.O. in 1987. In 1988, Kovács was conscripted into the army, and Palvölgyi László took over on bass. In 1988, the first album was released, and they opened for none other than Iron Maiden. The "Acélszív" music video featured a lot of footage of the band hanging out with Iron Maiden, and in fact, in the "Maiden England" video, Adrian Smith can be seen wearing an Ossian t-shirt.
After the second album, Pálvölgyi and Galántai left, being replaced by Vörös Gábor on bass and Nagyfi Zoltán on drums. His brother happened to be Nagyfi László of Pokolgép, and in fact Nagyfi left to join his brother in Omen in 1991, and in came Tobola Csaba.
This lineup recorded five albums, before internal tensions, especially between Paksi and Maróthy, caused the band to break up. They performed a farewell concert on May 14th, 1994.
Marothy went on to form Fahrenheit, and Paksi formed Wellington, (and also wrote some crime novels in English under the pseudonym Paul Trent).
In 1998, Paksi recruited a new lineup to perform one concert, which was recorded for a live album, and then Ossian decided to call the reformation permanent, and they have released four more full albums and an EP since then.
Paksi Endre - vocals
Rubcsics Richárd – Guitar
Erdélyi Krisztián – Bass Guitar
Kálozi Gergely – Drums
Maróthy Zoltán – Guitar, Vocals (1986-1994)
Kovács T. Péter – Bass Guitar (1986-1987)
Galántai Zsolt – Drums (1986-1989)
Pálvölgyi László – Bass Guitar (1987-1989)
Vörös Gábor – Bass Guitar (1989-1994)
Nagyfi Zoltán – Drums (1989-1990)
Tobola Csaba – Drums (1990-1994)
Ivanov Péter – Bass Guitar (1998-1999)
Cserfalvi "Töfi" Zoltán – Guitar (1998-2000)
Jakab Viktor – Bass Guitar (1999-2001)
Hornyák Péter – Drums (1999 - 2012)
Wéber Attila – Guitar (2000-2014)