User blog comment:BlueBarracudaMary/Protagonist, Deuteragonist, Tritagonist, Tetartagonist, Pentagonist, What Comes Next?/@comment-33286367-20200124014244

The Secret Life of Pets 2:

Protagonists - Max - The main protagonist, Gidget - The tertiary protagonist, Snowball - The secomdary protagonist

Deuteragonists - Liam - Max's deuteragonist, Chloe - Gidget's deuteragonist, Daisy - Snowball's deuteragonist

Tritagonists - Rooster - Max's tritagonist, Mel, Buddy, Norman, Sweet Pea - All Gidget's tritagonists, Hu - Snowball's tritagonist

Tetartagonists - Duke - Max's tetartagonist, Pops - Snowball's tetartagonist

Pentagonists - Katie, Chuck, Uncle Shep, Cotton - All Max's pentagonists, The Puppies - Snowball's pentagonists

Antagonists - Sergei - The main antagonist, Little Sergei - The secondary antagonist, Circus Wolves - Snowball's antagonist, The Fox - Max's antagonist, The Big Cat - Gidget's antagonist

Peanuts Movie:

Protagonists - Charlie Brown - The main protagonist, Snoopy - The secondary protagonist

Deuteragonists - Linus - Charlie Brown's deuteragonist, Woodstock - Snoopy's deuteragonist

Tritagonists - Sally - Charlie Brown's tritagonist, Fifi - Snoopy's tritagonist, Lucy - Former secondary antagonist and Charlie Brown's secondary tritagonist

Tetartagonist - Peppermint Patty - Charlie Brown's tetartagonist

Pentagonist - Marcie - Charlie Brown's pentagonist

Hexagonist - Violet, Patty - Both Charlie Brown's hexagonists

Antagonist - Red Baron - The main antagonist, Lucy - The secondary antagonist-turned-tertiary tritagonist, Violet - The tertiary antagonist-turned-hexagonist, Patty - The quarternary antagonist-turned-secondary hexagonist

Peanuts: The Great Pumpkin, Charlie Brown:

Protagonist - Linus

Deuteragonist - Sally

Tritagonists - Charlie Brown, Snoopy

Tetartagonists - Lucy, Woodstock

Shadow the Hedgehog:

Protagonist - Shadow

Deuteragonist - Sonic

Tritagonists - Rouge, Dr. Eggman, Amy

Tetartagonists - Tails, Knuckles, Omega

Pentagonists - Cream, The Chaotix

Antagonist - Black Doom, Doom's Eye, Devil Doom, Black Bull, The Commander, The President