- “Bruno... Bruno! Dreaming again?”
- ―Cinderella to Bruno
When Bruno was a puppy, he was given to a younger Cinderella as a gift from her father. After the latter died, Bruno and Cinderella grew up together under the hand of her evil stepmother, Lady Tremaine, who has two daughters, Anastasia and Drizella, and a cat, Lucifer, whom Bruno hates because of the way he treats Cinderella and his taunting and manipulations.
Apart from his friendly nature, Bruno is very loyal and understanding to Cinderella. However, he has little patience for Lucifer, whom he doesn't like, which usually causes him to get sent out of the house due to Lady Tremaine's rules. At the end of the first movie, he gets his revenge by scaring Lucifer out the window.
Bruno is a big slender bloodhound dog with red-brown fur covering most of his body (in the sequel it seems to be brighter though due to the animation style). He has a black nose, floppy ears, a tail, light-brown eyes, sharp nails that are usually always sticking out, and three little hairs like Goofy's on his head. He is also shown to have fierce teeth (often shown to Lucifer) and yet also he has a friendly face to him.
Bruno first seen during the prologue when Cinderella is a child (with himself being a puppy), he is seen happily alongside her, Major and her father at the Château, showing that Cinderella's father loved her, giving her what she wanted, though staying kind.
- “Bruno... Bruno! Dreaming again. Chasing Lucifer? Catch him this time? That's bad! Suppose they heard you upstairs? You know the orders. So if you don't want to Iose a nice warm bed, you'd better get rid of those dreams. You know how? Just Iearn to Iike cats.”
- ―Cinderella lecturing Bruno on Lucifer
He is then shown sleeping in the kitchen when, dreaming about chasing Lucifer (having a distain for him) when Cinderella wakes him up, he is happy to see her, but she then tells him how it is bad that he has caught Lucifer (as he was enjoying the fact that he had caught Lucifer in his dream) in his dream and that he should learn to be nice to cats, which is an idea he does not like. She tries to point out that Lucifer has his good points, but she can't think of any, which causes Bruno to laugh at Lucifer's expense. Lucifer then scratches Bruno on the face, causing him to growl at him, and then Lucifer pretends that Bruno has hurt him, resulting in Cinderella sending Bruno outside, with a kind scolding receiving from Cinderella, though Cinderella is seeming to now the truth of what happened, crossly scolding Lucifer also.
He is then seen in the middle of the film, Bruno watches Cinderella run outside to the garden, wearing her torn-up dress (destroyed by Anastasia and Drizella due to the bead and sash which they threw away earlier and not wanting her to go to the ball due to manipulation from Lady Tremaine), to cry on the bench nearby. He and Major look sad for the fact about what happened to her and that she is not going to the ball. Then they see a fog with sparkling stars is heading to her, which turns out to be the entrance of her Fairy Godmother. Bruno is turned into a footman by her for Cinderella's pumpkin coach to take her to the ball, sitting next to Cinderella.
On the stroke of midnight, when the spell is broken, he is turned back into his true form of a bloodhound as they need to rush away from the guards, leading to a chase scene. Alongside Cinderella, Major, and the mice, he runs behind the bushes, away from the palace guards who go past the pumpkin and smash it (though it was already returned to its true form). He is shown to be happy and pleased that Cinderella had fun at the ball and danced with Prince Charming, smiling.
- “Bruno! Yes! Bruno! Quick! Get Bruno! Get Bruno!”
- ―Cinderella to the Birds for them to get Bruno for help
Near the end of the film, Lady Tremaine has locked Cinderella in her bedroom, and Jaq and Gus have stolen the key from Lady Tremaine, but Lucifer has trapped it and Gus under a teacup before he can free her. Realizing that Bruno may be the one who can get rid of Lucifer, Cinderella tells her bird friends to fetch him and to allow Bruno to finally catch the cat he hates the most. They fly down to the shed and try to wake him up, with Major helping them (him neighing at him because he wouldn't wake up). He then follows them as he rushes into the chateau and, after being helped by them to get inside, scrambles up the tower staircase to arrive just outside Cinderella's room, where he catches Lucifer. He then lets out a growl, scaring Lucifer into jumping out the window. He jumps on the windowsill attempting to bite Lucifer and watches him fall to the ground below, finally getting back at him while allowing the mice to finally free Cinderella from her room. He is last seen joining Cinderella and Prince Charming alongside Major on their honeymoon.
Bruno returns in the second film, however with a much smaller than he had in the original, serving more of a cameo than a supporting role than he did before. Bruno is also only shown twice in the film and only in the first segment of the film, Aim to Please.
He is first seen alongside Jaq and Gus and Mary reuniting with Cinderella, just returning to the castle, his new home after Cinderella's wedding, he is seen licking Cinderella, her laughing, seeming glad to be reuniting. He is then seen the next morning, when the snobbish chief of servants of the palace Prudence comes to wake up Cinderella, put is shocked to be licked, by Bruno, sleeping in her bed, panting, much to annoyance of Prudence and shock of the ladies-in-waiting Beatrice and Daphne.
Bruno also makes an appearance in Cinderella's As Told by Emoji. He is first seen when the Fairy Godmother arrives alongside Cinderella, Jaq, and Gus as they are transformed, Bruno into a footman. He is then seen at the stroke of twelve, turning back into his true form and is subsequently confronted by Lady Tremaine. He then appears in the end alongside the other characters appearing, beside Cinderella and Prince Charming.
- “I hope Lucifer isn't chasing Bruno. That fat cat can be so mischievous.”
- ―Cinderella during meet and greets
Bruno is mentioned in Kinect Disneyland Adventures by Cinderella during meet and greets in the background, mentioning that she hopes Lucifer isn't chasing him, she also insults Bruno's enemy of Lucifer, calling him fat.
Bruno makes appearances in pictures throughout the walkthrough-attraction in Tokyo Disneyland such as one alongside Major and one alongside many other characters in the film (both from the Château and the palace), reacting to Cinderella's happily ever after with Prince Charming.
- Bruno was used against Lucifer at the end of the first movie, but for some reason, he was never used against Pom-Pom. In fact, Bruno is only seen twice in the second film with a minor role.
- Bruno does not appear in the third film, nor in the live-action adaptation. This could most probably due to budget cuts or possibly a lack of purpose to the story
- Bruno is one of several bloodhounds from Disney animated canon movies, including Trusty, Towser, Copper, Napoleon, and Stella.
- Although he is not a major character, he is very important character, as he was the reason that Lucifer was chased out so Cinderella could retrieve her happy ending, being pivotal to the ending