Weekenders Adventures of Son of Batman is another Weekenders/DC crossover made by Sonic876. It will appear on Google Drive in the near future.
At the headquarters of the League of Assassins, Ra's al Ghul grooms Damian Wayne (son of his daughter, Talia, and Batman) to succeed him as head of the league. The league is attacked by a group of assassins led by Slade Wilson, Ra's al Ghul's initial choice for successor before Ra's met Batman. Feeling betrayed, Slade decided to seize power. During the battle, Ra's is fatally burned in a missile strike explosion, dying inches away from reaching the Lazarus Pit. Although Damian stabs Slade in the eye, Slade escapes, vowing vengeance. Talia takes Damian to Gotham City to protect him with his father's help.
In Gotham City, Batman confronts Killer Croc, who is stealing mutagenic chemicals and steroids to enhance himself, to the point where he grew a reptilian tail. Batman gets ambushed by Croc before Talia electrocutes Croc from behind. She tells Batman about her father's death and leaves their son in his care, though Damian believes that he can take care of himself and does not need Batman. Although Damian wants to avenge Ra's al Ghul by killing Slade, Batman objects to this. Slade, now calling himself Deathstroke, captures Dr. Kirk Langstrom, who was working with Croc to enhance him in return for the mutagenics he stole and also had worked with Ra's, promising a formula for his soldiers. Slade threatens Langstrom's family to force him to recreate the Man-Bat formula for him and his soldiers. Damian bypasses Wayne Towers security to speak to Bruce, telling him about Slade's contact, Ubu, who was part of the raid on the League's headquarters and is stationed in Gotham. Although Damian wants to avenge Ra's al Ghul by killing Slade, Bruce objects to Damian wanting to kill. Talia is captured by Deathstroke when she and some remaining League members attack his compound.
Against Batman's orders, Damian leaves the Batcave and, after a chase and a long fight, defeats Ubu, whom he located by accessing the Bat-Computer. Before Damian can kill him, Nightwing arrives, mistakes him for a criminal and subdues him before bringing him back to the Batcave. Batman berates Damian for his recklessness, willingness to kill and exposing their operation. Batman then has Damian don the mantle of Robin to teach him discipline. Searching for a lead on Langstrom's location, Batman goes to Arkham to interrogate a rabid Killer Croc, who supplied the mutagens to Langstrom in exchange for his enhancements and is currently going through drastic, agonizing withdrawal symptoms that cause him to shed his scales and tail. Since others are too afraid of him to medicate him without being harmed, Batman promises Croc help in exchange for information. Batman follows Croc's lead about the formula's mutagen to Langstrom's apartment, where he finds a throwing star that he takes evidence of Deathstroke's involvement. Before he leaves, he goes throughout the building and finds a storage room filled with caged bats, with one larger cage being empty and broken open from inside. Batman then finds a rabid gorilla with bat like mutations, one of Langstrom's unstable subjects, and it attacks him until it dies from its mutations. A drone aircraft sent by Deathstroke then flies past and crashes on the building, destroying it, though Batman evades the explosion. Commissioner Gordon warns them about an abandoned stadium believed to house Deathstroke's men.
At the stadium, Batman and Damian question Langstrom but are attacked when Damian becomes violent. Before they successfully escape, they fight off a swarm of Man-Bats. In the cave, Langstrom reveals Deathstroke's plan to create superhuman, flight-capable assassins. While Nightwing works with Langstrom on an antidote, Batman and Damian rescue their family. Batman guesses that Talia has been abducted when he finds evidence of torture in an empty cell, which he keeps from Damian to not set him off. They find and rescue Langstrom's family, but Batman is unaware that Deathstroke challenged Damian to a fight in exchange for Talia's life through a video device he gave Langstrom's daughter in exchange for sparing them. Both Langstrom's daughter and Deathstroke's video tell him not to involve Batman in their fight.
Nightwing learns that Deathstroke is operating in an oil rig off the Scottish coast, and when Batman is distracted, Damian goes to the rig. He finds Deathstroke and Talia in an underwater base with a swarm of Man-Bats and another Lazarus Pit, whose fluid Deathstroke intends to sell. Damian pulls a gun on Deathstroke, who holds one against Talia's head until Damian drops his gun. Deathstroke fires at him, but Talia is hit instead after she jumps in the path of Deathstroke's gunfire. As Deathstroke corners Damian, Batman appears and the Man-Bats attack. Batman wards them off with sonar-emitting batarangs, and Deathstroke flees after losing to Batman in a brief fistfight.
Batman heals Talia in Lazarus Pit, while Nightwing and Langstrom reach the oil rig and cure the Man-Bats. At the same time, Damian fights and defeats Deathstroke, but refuses to kill him because he is his father's son. The elevator from the rig to the underwater base is destroyed when the Man-Bats, overwhelmed by the sonar devices, overcrowd the glass elevator shaft, flooding the base. Batman, Talia and Damian escape, but Deathstroke gets left behind and dies via flooding. Batman believes that Damian should stay with him and remain as Robin while Talia still wishes to recreate the League with Batman, who would rather disband the League, and Damian at her side. She decides to let him care for their son and leaves with the League of Assassins though she says she will return for him.
As the credits roll, a slideshow of the fight between Damian and Nightwing is played between credits.
- Ash Ketchum, Pikachu, Delia Ketchum, Misty, Togepi, Brock, Molly Hale, Littlefoot, Cera, Ducky, Petrie, Spike, Ponyo, Sosuke, Scooby-Doo, Shaggy Rogers, Fred Jones, Daphne Blake, Velma Dinkley, The Sailor Scouts, Mr. Peabody, Sherman, Penny Peterson, Ryder, Chase, Skye, Rumble, Marshal, Zuma, Rocky, Katie, Cali, Alex Porter, Oopsy, Cheer, Grumpy, Funshine, Share, Molly, Gil, Goby, Deema, Ona, Noddy, The Sailor Scouts, Tsukune Aono, Moka Akashiya, Kurumu Kurono, Yukari Sendo, Mizore Shirayuki, Annoying Orange, Pear, Apple, Passion Fruit, Midget Apple, Marshmallow, Grapefruit, Grandpa Lemon, Nerville, Princess Sapphire, Choppy, Prince Frank, Discord, The Human Mane 5, Lincoln (The Loud House), Lincoln's Sisters (The Loud House), The Bakugan Battle Brawlers and their Bakugan, Princess Anna, Elsa the Snow Queen, Olaf, Kristoff, Sven, Thomas the Tank Engine, Percy, James, Toby, Emily, Gordon, Henry, Edward, The Logging Locos (Bash, Dash and Ferdinand), Luke, Charlie, Hiro, Victor, Kevin, Paxton, Duck, Princess Twilight Sparkle, Spike the Dragon, Pinkie Pie, Applejack,Rainbow Dash, Rarity, Fluttershy, The Cutie Mark Crusaders (Apple Bloom, Sweetie Belle and Scootaloo), Princess Cadance, Shining Armor, Kazuto Izuka, Narue Nanase, Masaki Maruo, Hajime Yagi, Kanaka Nanase, Bathyscaphe, The DigiDestined and their Digimon, D-Team, Alpha Gang and their Dinosaurs, Bloom, Stella, Flora, Musa, Tecna, Layla, Fievel Mousekewitz, Tony Toponi, Tiger, Tanya Mousekewitz, Charlie Barkin, Itchy Itchiford, Jack Skellington, Bowser, Mistress Nine, Bowser Jr., Azula, Ranamon, Oogie Boogie, Kurumi Tokisaki, The Dazzlings, Kyoko Kudo, Yuki Kashiwazaki, Aya Kanazawa, The Grand Duke of Owls, Diamond Tiara, Silver Spoon, Oogie Boogie, Attila and Hun, Oakley and Annie, Cassidy, Butch, The Trix (Icy, Darcy, and Stormy), Dr. Blowhole, Clayton, Captain Hook, Kurumi Tokisaki, Dr. Facilier, Grizzle, Spectral Space Pirates, Darla Dimple, Grizzle, Sailor John and Team Rocket (Jessie, James and Meowth) guest starring in this film.
- Bowser, Mistress Nine, Bowser Jr., Azula, Ranamon, Oogie Boogie, Kurumi Tokisaki, The Dazzlings, Kyoko Kudo, Yuki Kashiwazaki, Aya Kanazawa, The Grand Duke of Owls, Diamond Tiara, Silver Spoon, Oogie Boogie, Attila and Hun, Oakley and Annie, Cassidy, Butch, The Trix (Icy, Darcy, and Stormy), Dr. Blowhole, Clayton, Captain Hook, Kurumi Tokisaki, Dr. Facilier, Grizzle, Spectral Space Pirates, Darla Dimple, Grizzle, Sailor John and Team Rocket will work for Deathstroke in this film.