'Gustavs Welt'.
Manuel Montero is a Spanish agency artist who has worked for the art studios Comicup and Comicon in Barcelona since the early 2000s. He has done artwork for Disney publications, like the Sunday Telegraph supplement Disney's Planet in the UK.
'Sumsi'.
Montero is part of the artist team of the German Bibi & Tina Magazin for Egmont-Ehapa since 2002, together with Juan Escandell, Mariella Barnes and Giovanni Castro. Montero has also worked for German titles like Quix, Sumsi, Gustavs Welt (in Eltern family) and Playmobil Magazin.
Disney's Planet, 14 May 2000, artwork most likely by Montero.