Weirdcore (or oddcore) is an aesthetic which is based around bizarre imagery and objects.
The aesthetic commonly features nostalgic characters and properties, usually popular in the early 2000's or 90's (ex. Hello Kitty, Care Bears or Furbies). This imagery is distorted bizarrely to create an unnerving affect. Other common subjects are animals like rats, opossums, insects and hairless cats, usually photographed in high contrast lighting. Weirdcore has broad overlap with webcore, kidcore, and nostalgiacore as it often uses the same nostalgic motifs, just in a bizarre way.