Art by BundleOfSticks
A Silver Legacy is a fanfiction crossover of My Hero Academia and One Piece that was written by KingofKings94.
A vigilante called Silver Rayleigh gets called by Aizawa during the villain attack at the USJ, and he deals with the attack with flair and speed. Seeing the students he freed, he gets Nezu to hire him as a Heroics teacher assistant, in order to help the teens learn how to be heroes and fight villains - and giving All Might a hand in helping Izuku develop his power as One for All's latest Torchbearer.
Can be found here on FanFiction.Net and here on Archive of Our Own
"A Silver Legacy" provides examples of:
- Achievements in Ignorance: Todoroki didn't even know what Haki was, yet he managed to awaken it during his fight with Izuku.
- Adaptation Name Change: Due to the changes brought by Silver, several characters have different Hero names.
- Aoyama picks Shining Hero: Starry Knight.
- Mina chooses Acidic Hero: Magnolia.
- Hagakure chooses Reflection Hero: Princess Miraa.
- Ojiro switches to Karate Hero: Viper Strike.
- Kirishima keeps Red Riot, but picks Roaring Hero as his sobriquet.
- Yanagi decides to be Ghostly Hero: Hollow Eve.
- Tetsutetsu becomes Steel Hero: Iron Bull.
- Todoroki chooses to be Yin-Yang Hero: Frostburn.
- Sato picks Sweets Hero: Sugar Rush.
- Kendo chooses Kung Fu Hero: Fire Fist.
- Izuku chooses Joyful Hero: Rubberman.
- Bakugo picks Explosion Lord God: Ground Zero.
- Adaptational Badass: Several characters end up becoming more powerful as a result from either Haki training, consuming a Devil Fruit, or both.
- Izuku has Conqueror's Haki and ate the Gomu Gomu no Mi.
- Todoroki also has Haki.
- Ochako ate the Mochi Mochi no Mi.
- Tokoyami ate the Tori Tori no Mi Model: Phoenix.
- Momo ate the Hana Hana no Mi.
- Mina ate the Mori Mori no Mi.
- Kirishima ate the Neko Neko no Mi, Model: Lion.
- Tetsutetsu ate the Ushi Ushi no Mi, Model: Bison.
- Kendou ate the Hito Hito no Mi, Model: Ifrit.
- Reiko ate the Horo Horo no Mi.
- Nejire ate the Hie Hie no Mi.
- Hagakure ate the Mira Mira no Mi.
- Shinsou ate the Moku Moku no Mi.
- Hatsume ate the Gasha Gasha no Mi.
- Autocannibalism: Played for Laughs with Ochako, who can turn herself into mochi, which is her favorite food.
- Awesomeness Is a Force: Much like in his parent series, Rayleigh can use Conqueror's Haki to make people faint from his sheer presence.
- When Izuku awakens Conqueror's Haki during his fight with Shinsou, it's so intense half the stadium faints from the shock.
- Bad Powers, Good People: Kendou, as of chapter 12.
- Big Damn Heroes: How Rayleigh introduced himself to 1-A. He saves Tsuyu Asui from being touched by Shigaraki and punches him hard enough in the stomach to send him flying all the way back to into a wall across USJ.
- Cool and Unusual Punishment: During the gardening bonding day Rayleigh puts 1-A and 1-B in, when Bakugo keeps up with his usual Jerkass behavior, Rayleigh tells him to stop or he'll be made to compliment everyone in the class.
- Cool Old Guy: Rayleigh and Gran Torino, natch.
- Crossover Couple: Rayleigh used to be married to Recovery Girl.
- Curb-Stomp Battle: Rayleigh destroys the Nomu in a fight, and when the villains try to attack him, he easily dodges all of their attacks, even calling what's going to happen, with a bored face.
- Delayed Reaction: Rayleigh has one when he realized Ochako has the Mochi Mochi no Mi in her hands with a bite taken out of it.
- Didn't Think This Through: After Mei forfeits in her match (because she already showed off everything she had brought), Rayleigh points out that she could have shown off her stuff much better if she had won her match.
- The Dreaded: Rayleigh's known to Japan's villains as "The King of Absolute Terror". Even All for One knows to step lightly around him.
- Embarrassing Nickname: Aizawa bears the nickname "Suzi", courtesy of a day he was forced to crossdress as a woman for an undercover job to deal with an arms dealer - and got hit on by eleven guys, including said arms dealer.
- Handicapped Badass: Zato is blind, but can keep up with the Hero students, even being able to damage Dark Shadow with his cane.
- Heterosexual Life-Partners: Rayleigh and Gran Torino.
- Mad Scientist: Hatsume Mei was already one. Eating the Gasha Gasha no Mi ends up making her worse.
- Major Injury Underreaction: When Rayleigh shows up at 1-A's classroom with Recovery Girl's syringe cane stabbed into his shoulder, he claims she's hurt him worse and takes it out.
- My Greatest Second Chance: Rayleigh joins U.A.'s teaching faculty, as he sees teaching the first years as his chance to atone for the mistake he made with his previous student, who turned villain.
- Noodle Incident:
- All Might brings up the "Turtle Island incident" to make Rayleigh stop trying to embarrass him.
- Silver once used Present Mic as bait for emus that Hound Dog herded into a trap.
- Oblivious to Love: Kirishima is unable to realize that Mina is crushing on him. Bakugo wonders if his Quirk just makes him dense.
- Old Master: Rayleigh and Gran Torino.
- Skewed Priorities: When Tetsutetsu wonders if he's become a cow after growing a pair of horns, Koda points out he's more likely a bison. Ojiro intervenes... to express his surprise that Koda can talk.
- What If?:
- The tournament has multiple changes:
- A few of the students go to different internships.
- Iida is forced to go with a hero called Twilight, after Rayleigh forces him to realize his "plan" of going after Stain would not do him any good.
- Yaoyorozu and Kendou pick for Fat Gum after being warned about Uwabami usually working on ad making.
- Bakugo chooses Gang Orca, who makes it clear he will force Bakugo to learn how to stop acting like a jerk.
- Hagakure joins Jiro in choosing Death Arms.
- Yanagi picks the Wild Wild Pussycats.
