Both an Australian ABC-TV documentary screened in 2004 and the curators of an exhibition at the State Library of New South Wales in 2005 suggested that Thomas Kat was a prototype or precursor of Felix.
Un documental australiano da ABC-TV transmitido no 2004 e unha exposición na Biblioteca Estatal de New South Wales o 2005 suxeriron que Thomas Kat foi un prototipo ou precursor de Felix.