Cogsworth naturally has a serious demeanor which is evident in his strict attitude in serving the Beast and ordering the other servants around constantly. However, Cogsworth does mean well and is as good-natured as Lumiere is. He is Lumiere's best friend and also a rival of sorts. Cogsworth's preference to abide by the Beast's rules often puts a severe strain on his friendship with Lumiere, who opts for a more rebellious and care-free personality, but overall, he values his friendship with Lumiere and sees him as a brother, demonstrated in the original film (when he saves Lumiere from being melted by LeFou, Gaston's henchman) and the midquels.
The castle majordomo, transformed into a clock. While he is as good-natured as Lumiere, he is extremely loyal to the Beast so as to save himself and anyone else any trouble, often leading to friction between himself and Lumiere. Cogsworth assists the other castle servents in helping Beast and Belle learn they just might be meant for each other. When the castle is attacked by Gaston and his village friends, Cogsworth joins the battle to save Beast. In the end when Belle confesses her love for Beast, Cogsworth and the other servants are restored to their human forms at last.
Though following the same general story as the film, one of the additions made to the musical would be a more elaborately detailed version of the spell with the object transformation being mostly gradual, as to make sense out of having human-sized versions of the enchanted objects. Over the course of the show, Cogsworth is starting to shift further into becoming more of a clock, developing a turnkey and driving further desires for the spell to be broken. A relationship with the Wardrobe would also be added, with Cogsworth having been an admirer of her opera performances.
Cogsworth is witnessing Beast and Belle relationship together and see they are becoming closer and closer as the day goes by. Belle walks through and seems excited. Cogsworth and the servants have a bad feeling Belle is thinking of Christmas and unfortunately for them they are right. Cogsworth and the others try their best to change the subject to no avail. Lumiere and the others decide to go with it but Cogsworth does not. While Lumiere, Belle and the rest of the castle wishes to do a Christmas celebration without the Beast, Cogsworth out of fear wishes not to join the rest of the group in order to keep the Beast on his good side. In the end when Beast finally realizes Christmas is a time to spend with the ones he care about, Cogsworth joins the castle in their first Christmas celebration in years.
On the anniversary of Lumiere's first date with Fifi, Lumiere grows so nervous to the point that he cleans himself excessively and turns to Belle for advice, by walking with her in the garden and reciting what he plans to say to Fifi to her. Fifi overhears this, and believes that Lumiere and Belle are having an affair behind her back. To get back at Lumiere, Fifi attempts to seduce Cogsworth, who is apparently not interested.
Cogsworth feels he is losing control over his staff, and demands their respect with harsh treatment. In the meantime, Belle convinces Beast otherwise, and he releases the bird once its wing is cured, but the bird, still too weak, begins to fall, and Beast rushes to rescue it. In the process, Cogsworth falls from the West Wing balcony and into the garden, but is unhurt, and learns that you cannot demand respect, but you can earn it by giving it.
Role in the series
Cogsworth reprises his role in the series, but may become a member of the Shell Louge Squad should the enchantment not wear off on him, or if he gets an ability to become human, but may most of the time be a talking clock due to the fact it makes him interesting at best. (well, i wasn't gonna do it, but, ahh, what the heck.)