Thunderking had a villanous era before his presumed death. After being crushed by his spaceship, his so called minions are dead except for "Rainclouddrop". Thunderking doesn't want to remember his past stuff, and more likely focuses on being a good thundercloud. He is friends with Hero King, an orange 90-blocked Numberblock. Thunderking is autophobic and fears to be alone, Luckily he never has been alone once in life.