Xavier Àgueda is a comic artist from Barcelona, who published his first comics in his university magazine in 1999, using the penname Toutatis. His best known creation is 'El Listo' and he started publishing cartoons with his character on the internet in cooperation with Guille Martínez-Vela in 2003. In 2005 he started contributing to several print magazines, including Monográfico, El Ajopringue, El Cubo, WEEzine, Kristal, El Mohal, Le Potage, El Escéptico, Cretino, Bipolar and El Cometa.
He is a regular contributor to TMEO magazine since 2007. In 2010 and 2011 he was also present in the cartoons section of the online newspaper 20 Minutos. His work has been collected in books like 'El gran libro de la cinefilia' (2010) and 'El Listo' (2011).