Aloysius Xingu L. Pendergast, main character in the Pendergast series by DouglasPreston & Lincoln Child
Aloysius "Nosey" Parker, puppet character in the Thunderbirds Are Go series Theodore Aloysius "Theo" Huxtable, son on TV's "The Cosby Show"
Aloysius "Alo" Creevey, character on British TV's "Skins" Franklin Aloysius Mumford, character on TV's "My Wife and Kids"
Aloysius Minch, character in the Mother video game series
Brother Aloysius, an alias of bad hat and murderer Henry Meats in "Sinister Street" (1913) by Compton Mackenzie
Aloysius, Sebastian Flyte's teddy bear in Evelyn Waugh's "Brideshead Revisited" (1945)
Aloysius Knight, character in the novel "Scarecrow" by MatthewReilly