Albeit lacking bravery and being very timid at times, he loves reading and solving cases with his fellow agents. If he could be any animal, he would be an eagle, because then he could fly away from any danger. His favorite gadget is the Rope-inator.
- In Overdue, it is revealed he was friends with Octavius.
- He is the second character with blue eyes, the first being Otis.
- He is one of three Mobile Unit members able to speak Spanish at the beginning of "The Void", with the other two being Opal and Orla.
- He does not like pineapple juice.
- Despite his hair being red, he is not a member of the Tube Operators; however, he is stated to have a twin brother who is one.
- He enjoys throwing snowballs and watching people catch them.
- He knows how to lip read.
For Oswald's appearances gallery, go here.