You were like a really weak player, and Planetlord wasn't to much less weak. Since you were weaker then him he thought of you as the perfect target, because you were part of Clownpierce's team, Clownpierce was the most deadliest player so knowing he had such a weak teammate he had to take you and get some of Clownpierce's hearts in return for you. He broke into your base one day and stole you. He took you back to his base and trapped you in an obsidian box