An Onomatopoeia Adventure

Ono and Mato, pronounced as "On-oh and Mah-toh", have been best pals since they were young. They love going on different adventures.
Ono, a wise turtle, and Mato, a fun-loving dog, go on an onomatopoetic adventure running from an unknown character.
Find out who they are running from in this crazy ONOMATOPOEIA ADVENTURE