Can you briefly explain Pennywise's origin story?

Sure. Pennywise is from another dimension. It uses the clown form to scare and kill in Derry.

Sure. 7 - Eleven started in Texas in 1927 as a store mainly selling ice. It got its name from its operating hours of 7 am - 11 pm.

If 'it' is a story element, like a magical object in a fairy tale. The origin story could be that it was created by a powerful wizard long ago for a specific purpose, and as the story unfolds, its origin might be gradually revealed through the plot and characters' discoveries.

Shego's origin is linked to her association with Dr. Drakken. Her powers are a big part of her identity. She likely developed them before teaming up with Drakken. Once they joined forces, she became his main henchwoman, using her powers to help him in his evil schemes.

Well, thunder is a result of lightning. In the atmosphere during a storm, charges build up. Lightning occurs when there's a huge discharge of these charges. The extremely high - temperature plasma of the lightning causes the air to expand explosively. This expansion creates the sound wave we call thunder.

Sure. Chewbacca is from Kashyyyk. He's a Wookiee. That's about it in a nutshell.

Sure. Dexter was a forensic analyst. But due to his dark urges and his father's guidance, he became a killer of killers. His origin has to do with his mother's murder and his own psychological issues.

Sure. Ursula was an outcast in the underwater world due to her use of dark magic. This led to her becoming the sea witch with a vendetta.

Yoda is from a mysterious species. He was trained as a Jedi on his homeworld and grew to be a powerful and wise Jedi Master.

Medusa started out as a normal, beautiful woman. But because of what happened between Poseidon and her in Athena's temple, Athena turned her into a monster. Her new form had snakes for hair and the ability to turn onlookers into stone, which is the basic origin of Medusa in Greek mythology.