Big Papi was seen eating an onion ring because Bob Jennings, his owner, was out of cantaloupe. After Kevin Brueck and his friends were turned into onion rings by Orange, Big Papi ate Kevin Brueck at the end.
Big Papi's name comes from the nickname for David Ortiz, a player on the Boston Red Sox.
Big Papi was seen eating an onion and Kevin Brueck as an onion ring; however, onions are toxic to dogs, so this does not make any sense since he did not die after eating the onion rings (this is probably a goof).
He is the first character to eat another character.
After Kevin was eaten, he could have eaten the other onion rings, and therefore eaten his owner.
It is the first dog in the series. They added Cuddles after Big Papi.
The Achievement Leaderboard has created a badge for this character called Big Papi and is in the Animals track of the edit track, and can be awarded to you by registering and making 50 edits on Animals pages. It is a silver medal, meaning it is worth 50 points.