The Warden is the best knight in Captain 0's army; his skills with a sword outmatch even Captain 20. Born in the rural areas of Ohio, The Warden was trained in sword combat to fight off the hordes of both Skibidi Toilet's Large Cameraman and Bowser's Army. This would soon catch the attention of large armies, and soon, he was hired to be a guard at high-ranking buildings.
However, soon he would have to deal with his biggest foe ever, a Titan Speakerman. This fight would soon be ended by a sword through its speaker. Realizing that the Speakermen are a significant threat to the UnWorld, he set off to cause a Speaker genocide, ending up joining Bowser's conquest of the Speakermen's territory. After that, he was arrested and sent to The Wall for 10 years, but it wouldn't make him a fucking pussy; it made him stronger and even more heroic.
He would later get a contract by someone to protect the Mushroom Kingdom from Bowser's evil forces, and so he set off on his quest to rid the world of evil. With every enemy he killed, his UnRank went up. Soon, Captain 0 sought him out and asked if he wanted to become an aAssociate of the Undefeatables. Warden declined, as in his own words, he said this.
I'm sorry mister 0 but being an associate would make me a gary stu and i'll never be that
—Warden to Captain 0
So instead, Captain 0 gave him guard duty at the Captain 0 Tower, until he would be called in to team up with Basara and Shiki in order to stop Kaido and his army from reviving Nobunga.