Fan Art (ファンアート Fan Aato) or Fanart is artwork that is based on a character, costume, item, or story that was created by someone other than the artist, such as a fan, from which the word is derived from. The term, while it can apply to art done by fans of characters from books, is usually used to refer to art derived from visual media such as comics, movies or video games. In addition to traditional paintings and drawings, fan artists may also create web banners, avatars, or web-based animations, as well as photo collages, posters, and artistic representation of movie / show / book quotes.
Some Triggerheart Fan ArtsEdit
Triggerheart Exelica is not exent of Fan arts and illustrations, it's hard to find some good examples due to the fanservice or because they have adult-themed contents, but here you go.