Punk

Punk was a music style, cultural group and associated fashion and cultural behaviours popularised on Earth during the 1970s and 80s. Along with rock and roll and hippies, it was part of the 20th century's many subcultures. (PROSE: No Future)

He's part of the Establishment. He's a pig!Jo Grant

By those involved in the punk scene such as Danny Pain, punk was considered the antithesis of rock and roll music; transcending the music into a movement. (PROSE: No Future)

Culture

Punk culture was anarchist, nihilistic, and anti-establishment, protesting against it in physically violent protests and in music and cultural groupings. (PROSE: Rags)

Call me an anarchist, then. Punk before my time.
It's 1942. You can't say "punk" with that specific meaning yet! You just can't! – Noël Coward and the Eighth Doctor ^[src]

Fashion

Punk fashion was influenced by the counter-cultural movement associated with the punk music and behaviours.

Fashion items made of leather such as leather jackets and jeans so tight as to appear sprayed-on, were also part of the punk look. (PROSE: Eternity Weeps, Rags) More violent fashion items such as leather gloves with spikes and hard wearing leather boots were also part of the punk anarchist fashion. (PROSE: Rags)

Ripped or distressed clothing also formed part of the punk aesthetic such as motley tunics or ripped t-shirts. (PROSE: Rags)

Body piercings such as pierced eyebrows and tongue formed part of the punk fashion and any body piercings of a sizeable degree were associated with punk as a result. (PROSE: Eternity Weeps, Interference - Book One, Rags)

Hair and the individualisation of it away from the more clear cut styles of the rock and roll era, with colourful or additions such as metallic highlights, spiky designs or mohawk styles being popular with punk styles. (PROSE: No Future, Eternity Weeps, Rags, Blue Box)

In 1980s New York, silk shirts and slit sunglasses typified the punk fashion. (PROSE: The Left-Handed Hummingbird)

Other cultural groups

During the 1970s, other subcultural anti-establishment or anarchic groups were also associated wih punks, including; hippies, bikers, Rastafarians, skinheads and rockers. (PROSE: Rags)

In the 1990s, other derivations of the punk genre developed such as cyberpunk, eking on punk's anarchist culture and developing its own style of protest and anarchy. (PROSE: Vampire Science)

Punk culture continued to exist and be associated with other cultural groups in the 21st century, during this time it was associated with the crow and goth subcultures. (PROSE: Cat's Cradle: Warhead)

You're a punk.
It's good to be a lunatic. – Rose Tyler and the Tenth Doctor^[src]

Negative associations

Punks often were associated with negative situations due to their anarchic origins and associations with subcultures, as a result "punk" was also used as a minor insult. (PROSE: No Future, The Face Eater, The Ghosts of N-Space)

Other references

Peri Brown thought that "the Voord, the Morpho creatures, [and] the Fishmen of Kandalinga" sounded like the line-up for a punk concert. (COMIC: The World Shapers)