Of course, you can always go for tattoo designs based on badass comic book characters. But make sure the design isn’t too cartoony, which defeats the purpose of a badass tattoo. This means the design includes more realism and has darker shades of colors instead of vibrant ones. There are far too many badass comic book characters to choose from. If you want a safe bet, there’s always Wolverine, arguably the most badass character ever.
Since the Disney movie The Little Mermaid, the mermaid form has been a popular style for both costumes and tattoos alike. Above you can see a cool example of an under the sea style theme on the forearm. Silhouetted styles are generally safe choices as the thicker line work makes them last longer and less intricate line work that can potentially be messed up or fade over time.
Tattoos are also placed on animals, though rarely for decorative reasons. Pets, show animals, thoroughbred horses, and livestock are sometimes tattooed with identification and other marks. Tattooing with a 'slap mark' on the shoulder or on the ear is the standard identification method in commercial pig farming. Branding is used for similar reasons and is often performed without anesthesia, but is different from tattooing as no ink or dye is inserted during the process, the mark instead being caused by permanent scarring of the skin. Pet dogs and cats are sometimes tattooed with a serial number (usually in the ear, or on the inner thigh) via which their owners can be identified. However, the use of a microchip has become an increasingly popular choice and since 2016 is a legal requirement for all 8.5 million pet dogs in the UK.
Mainstream art galleries hold exhibitions of both conventional and custom tattoo designs, such as Beyond Skin, at the Museum of Croydon. Copyrighted tattoo designs that are mass-produced and sent to tattoo artists are known as "flash", a notable instance of industrial design. Flash sheets are prominently displayed in many tattoo parlors for the purpose of providing both inspiration and ready-made tattoo images to customers.