Twenty novelists, including children's author Philip Pullman are offering parts in their new books as prizes in a charity auction.
Pullman said he would name a minor character after the winner
The winners will have characters named after them, and in some cases will have scenes built around them.
The money from the 30 March auction will raise money for the charity Medical Foundation for the Care of Victims of Torture.
Other authors taking part include Sue Townsend and Tracy Chevalier.
Pullman told the Daily Telegraph he would turn the winner of his auction into a minor character, and not a walk-on part.
"Obviously if it is a name like Mavis Shufflebottom I won't be able to use it in the same way as if it was, say, Carlos Gomez," he said.
Pullman's new book is said to have some relation to his hugely popular fantasy trilogy His Dark Materials.
The charity is inviting bids starting at £100 - but there is nothing in the rules which says the authors have to treat the winning bidders with respect.
One author, Jim Crace, said that in a previous auction he had turned one of the winners into an unpleasant character.
Two years ago author Fay Weldon received money from the jewellery firm Bulgari to name her new novel after it.
Winnie The Pooh creator AA Milne named the character Christopher Robin after his own son.