As Elsa and Lucius are from different series, they have never met in canon. Even though a few Disney crossover video games could have them cross paths with each other or get them added in the same team, by the player's choice.
Both Elsa and Frozone use ice-related powers, and have used their abilities to run across large bodies of water. They use their powers to keep innocent people safe from villains and to bring the magical joys of winter, even though a few of them were the main reason why Elsa and Lucius were forced to hide their ice abilities. The two also wear blue colored clothing, that are seen as their signature outfits. Just as "Frozone" is Lucius's superhero title, the title of Elsa's Disney film is "Frozen". Frozone comes from a world of superheroes, while Frozen II has Elsa entering a world of magical beings.
The two also have main antagonists who had first presented themselves as friends to them, before they learned of their true colors and motives for gaining their trust. Along with Prince Hans and Evelyn Deavor making Elsa and Frozone look like villains in the public eye.
Elsa and Frozone are two of the main members in the Secret of the Incredible Frozen Guardians crossover fandom, with Jack Frost from Rise of the Guardians and Periwinkle from Disney's Fairies. As well as them being apart of the expanded ice character fandom, Just-Ice League, where Mr. Freeze from DC Comics, Iceman and Loki from the Marvel universe, The Ice King from Adventure Time and Jack are all seen as Frozone's love rivals for Elsa's affections.
While the ship itself isn't very popular, it still has loyal fans that like the idea of using their icy trait as a reason to ship them. Even though their ice power and blue signature colored clothing is two of the main things that they have in common, along with their Disney films having something to do with family.
In some Superhero AUs, Elsa is commonly seen as Frozone while he is portrayed as her or is placed in Elsa's blue dress, for fun, in Frozen AU's.
- Both are two of the playable characters in the Disney crossover games, Disney INFINITY, Disney Emoji Blitz, Disney Magic Kingdoms and Disney Heroes: Battle Mode.
- One of the time limit events in Disney Magic Kingdoms had players trying to win or buy some Frozen characters, stands and rides before it moved onto the Incredibles side of the event, in order for players to win the chance of obtaining baby Jack-Jack Parr.
- Elsa has her own Lego short special and Lego toy set series, Frozone is one of the main playable characters in the Lego: The Incredibles video game.