are billy and mandy siblings

No, Sharkboy and Lavagirl are not siblings. They are portrayed as friends in the movie 'The Adventures of Sharkboy and Lavagirl'. Sharkboy, as you can guess from the name, was raised by sharks after he was separated from his father during a storm. As for Lavagirl, she hails from Planet Drool and has the power to generate heat and fire. They're companions on an amazing adventure, not siblings.

Ah, that's a question that causes a lot of tension in the 'Shadowhunter Chronicles' by Cassandra Clare. In 'City of Bones', the first book of 'The Mortal Instruments' series, it's revealed that Clary Fray and Jace Lightwood are siblings. But, don't fret! In the subsequent books, it's unveiled that it was all a deception played by Valentine Morgenstern, their supposed father. In a shocking twist of fate, Jace actually turns out to be the son of Stephen Herondale, making him and Clary not siblings after all. This rollercoaster sibling drama is a major plot device throughout the series, keeping readers on their toes. So, in a nutshell, though Clary and Jace were initially believed to be siblings due to some cleverly crafted deception, they are not siblings in the true sense. What an emotional ride, isn't it?

Athena, a goddess in Greek mythology, was known for her role as a war goddess who prepared men for battles and provided them with necessary tools and supplies. She had many half-brothers and half-sisters, including Ares, Heracles, Apollo, Dionysus, Hebe, Hermes, and Helen of Troy. Athena’s mother was Metis, and her father was Zeus. Athena had 26 siblings, including Aeacus, Angelos, Aphrodite, Apollo, Ares, Artemis, Dionysus, Eileithyia, Enyo, Eris, Ersa, Hebe, Helen of Troy, Hephaestus, Heracles, Hermes, Minos, Pandia, Persephone, Perseus, Rhadamanthus, the Graces, the Horae, the Litae, the Muses, and the Moirai. Athena’s parents were Zeus (father) and Metis (mother), though in some stories she didn’t have a mother.

Together with a vibrant blue 1979 Chevrolet Camaro Billy rips up the streets of Hawkins. It's a car full of individual characteristics, giving life to Billy's wild and rebellious nature in vivid detail. Billy's 1980s hardworking life is underscored by the car, not just a king of metal but also providing echo for other actors who have said he was good. At the same time, it brings heartwarming memories from those earlier days back to those who watch Stranger Things.

In "Jurassic Park 3", the allegedly careless dinosaur assistant Billy Brennan teeters on the brink of death. However, he leaves the nest by way of Pteranodons, in order to protect Eric, but he himself will not go. The film led one to believe that he had gone for good; but in fact, near its close, we see him injured but alive and being looked after by the army's rescue team.

In the 'Scream' franchise, Billy Loomis did not get anyone pregnant. His relationship with Sidney Prescott was a fundamental plot, but it never resulted in a pregnancy.

No, Eren and Mikasa from 'Attack on Titan' are not siblings. However, their bond represents deep family ties as they've grown up together. Eren and Mikasa met when they were children, and since then, Eren has vowed to protect her. Over time, their bond becomes powerful, often blurring the lines of friendship and family.

Team Rocket siblings, aka Jessie and James, are iconic in 'Pokémon.' Their dynamic is so entertaining! Jessie is fierce and driven, always aiming to outshine others, while James brings a more whimsical and sensitive side to their escapades. They keep trying to steal Pikachu, but their antics make them lovable instead of villainous. Their chemistry is what makes their team timeless, making every episode a fun ride!