As a thief, Lockmyer is very discreet, prepared for any possible situation. He is also a faithful man, respecting Climb's will during all of their dangerous quests.
A former orichalcum-ranked adventurer, Lockymyer joined Marquis Raeven private force consisting of veteran adventurers.
The Men in the Kingdom Arc
- Main article: The Men in the Kingdom Arc
During the suppression operation against Eight Fingers, Lockmyer teams up with Climb and Brain. During the reconnaissance, he finds out that all of Six Arms are gathered at their destination. Fortunately, Sebas joins them, allowing them to get inside and rescue Tsuare rather than fight. While Sebas kills four of Six Arms without injuries, Lockmyer, Climb and Brain encounters Zero and Succulent. Lockmyer is badly wounded by Zero's attack, but overcomes the crisis by the help of a healing potion. He later supports Climb to defeat Succulent.
After the appearance of Jaldabaoth, Lockmyer volunteers to help Climb and Brain even though he knows that their mission is extremely dangerous. Fortunately, he returns safely.
The Magic Caster of Destroy Arc
- Main article: The Magic Caster of Destroy Arc
As one of Marquis Raeven's private troop, Lockmyer alongside with his comrades joined the annual war at Katze Plains. During the Massacre, Lockmyer alongside with his comrades tried to buy time for Marquis Raeven to escape but he and the rest of his comrades were all killed by the Dark Young.
Being a former Orichalcum ranked adventurer (thief), Lockmyer was skilled in stealth and disarming traps. His own combat capability was low, but he can support his colleagues by using various items.
Marquis Raeven was Lockmyer's employer and superior in his private force.
Lockmyer teams up with Climb during the suppression operation. Later he volunteers himself to help him again during the events of the demon invasion. Climb reminds him of his younger days. He respects his decisions and thinks no one has the right to force him off from his path.
They teamed up in the suppression operation to help Climb. They both care and respect Climb.
- (To Brain Unglaus about Climb): "How shall I put it seeing a kid like him fight so hard made me remember the days when I was still young, even if it was just for a while. I think I understand how you feel about this too. Even so it was the path he chose. We have no right to force him off it."