Papa Smurf

Papa Smurf is the leader of the Smurfs.

The Smurfs Meet the Mario Bros.
Papa Smurf and the other Smurfs get chased by Gargamel and Azrael into the Mushroom Kingdom. There, they meet Mario, Luigi, Princess Peach, Toad, Yoshi, Bowser, Bowser Jr, Ludwig, Lemmy, Roy, Iggy, Wendy, Morton, Larry, the Tyrannosaurus Rex, Pac-Man, etc.

The Smurfs Meet Greg Heffley
Papa Smurf, the Smurfs, and the Mario characters get chased by Gargamel and Azrael into a book called Diary Of A Wimpy Kid: The Last Straw. There, they meet Greg, Rowley, Manny, and Rodrick.

The Smurfs Meet Percy Jackson and Annabeth Chase
Papa Smurf, the Smurfs, the Mario characters, and the Diary of a Wimpy Kid characters get chased by Gargamel and Azrael into a book called Percy Jackson and the Olympians: The Last Olympian. There, they meet Percy Jackson, and his sweetheart Annabeth Chase.

The Smurfs Meet Captain Underpants
Papa Smurf, the Smurfs, the Mario Characters, the Diary of a Wimpy Kid characters, and the Percy Jackson characters get chased by Gargamel and Azrael into a book called Captain Underpants and the Prepoterous Plight of the Purple Potty people. There, they meet Captain Underpants, George, and Harold.

The Smurfs Meet the Real World Kids
Papa Smurf, the Smurfs, the Mario characters, the Diary of a Wimpy Kid characters, the Percy Jackson characters, and the Captain Underpants characters get chased by Gargamel and Azrael into the Real World, where they meet Fletcher, Kartik, Ryan, Leif, Brian, Alex, Richie, Jake, Jay, Shagari, Beck, Flynn, and Lily Kate.

The Smurfs and Friends: The Movie!
Papa Smurf is one of the few Smurfs Meet characters to go to New York City, where they met Patrick and Grace Winslow, find a stargazer, and battle Gargamel at Belvedere Castle before going back home.