The Monstrous Mascot

La Mostruosa Mascotte (The Monstrous Mascot) is an Italian children's book by Cristina Brambilla in the "Misteri A 4 Zampe" series.

Premise
This time Mystery Inc. is "immersed" in the Olympic atmosphere! Arriving at the stadium, the five detectives attend the parade of nations, but suddenly a mascot causes a panic among the participants: it is not just a mascot, but a monster mascot!