Demon Seal Orimon
Fire and Undead
Jaxtern evolved from Pyrompkin. There was a legend about the first Jaxtern: "There was a Pyrompkin that was so powerful that the pumpkin that sealed it needed to grow in order to control its power. Although the pumpkin grew strong, the fire demon grew stronger. He knew that one day his seal will break and he will be free. To pass the time he played tricks on everyone. Then he got an idea to prank the "most evil monster" of all. He summoned this monster and challenged it to a battle. Before the battle began the Pyrompkin used some divine light that he stole awhile ago to trap the Monster. Angered, the Monster demanded freedom. The Pyrompkin also wanted to be freed from his seal and would even make a deal with the devil to get it. The Pyrompkin would release the monster if the monster releases the Pyrompkin. The deal was made. The monster gave a potion to the Pyrompkin. It worked. He was finally out of his seal. But the monster got the last laugh. The Pyrompkin was once again sealed, but this time in a lantern, which is carried around by the soulless reanimated pumpkin body. The monster gave it the name Jaxtern. To this day, any Pyrompkin who becomes too strong will meet the same fate."
Pyrompkin >>>>>> Jaxtern
corruption of "Jack's"(as in Stingy Jack) + Lantern
Tend to be more active during the Harvest Moon.