Devilcore is an aesthetic that draws inspiration from the grotesque, eerie, and seductive. It often utilizes occult and Satanic imagery, particularly in moodboards. It shares elements with the Horror genre, especially Catholic Horror , and contrasts with Angelcore .

Devilcore fashion typically incorporates dark colors, especially black and red, and may include tight or revealing clothing, bold patterns (such as stripes or flames), and sacrilegious motifs. Materials like fishnet, lace, and leather are common, and accessories such as chains, buckles, harnesses, and chokers are often used. Devilcore fashion may also feature demonic imagery, such as horns or pointed tails. Makeup is typically heavy and dark.

Devilcore often uses disturbing or graphic imagery, text boxes and pictures implying sinful activities. Images used in these aesthetics may include satanic imagery like inverted pentagrams, the Leviathan Cross and demonic sigils, as well as common creepy aesthetic imagry such as:

Devilcore fashion is based on dark colors, creepy accessories, and also religious symbols. Devilcore fashion is considered edgy and is related to dark alternative styles such as Goth / Gothic . Devilcore fashion may include: