Lockle

Once a pile of gears lying in Temporal Tower, Horos was brought to life by one of the time gears brought back by a duo of heroes, and given a form. Since there are 5 time gears in existence in the tower, there are 4 other "siblings" of his who look more or less identical, going by the names Eterna, Chrono, Centuria, and Momento. All of them hold their respective time gear in their chest.

Due to an incident, Horos became "corrupted" and his gears began to spin in the opposite direction, giving him a shift in personality - a burning curiosity and a desire to leave the tower. He's the only one to have done so, and so he gave himself a new name, Lockle.

Lockle is very kind and naive to a fault; he is easily taken advantage of and fully devotes himself to whoever he has dedicated himself to. He doesn't devote himself equally to everyone though; his views and devotions are molded by whoever he's devoted himself to prior.

In Cynosura, Lockle is the manifestation of the clock shop dimension that Coel is trapped in. He takes on younger Coel's form, explaining why it seems as though a young Coel and an older Coel exist in the same space at the same time.