Bosco

"Let me explain something. This is my park, and these are my rules. You look at my girlfriend again, and you're dead. You come near her, you're dead. You talk to her, and you're...(Thunder and Lightning: Dead!!) He ain't nothing, watch. Come on, you wanna go? You wanna go? (Marmaduke: No! No! No, no, no.) Didn't think so. Welcome to the O.C., mutt."

- Bosco intimidates Marmaduke

"You gotta be kidding me. You're kidding me, right? Does everyone here have rabies-induced insanity? This is sacred turf. It's just for pedigrees. (Marmaduke: Well, not anymore.) You know what? You're all just mutts. All of you! Let's go, Jezebel. (Jezebel: I think everyone should sit here, too.) (Thunder: I'm done taking your spit on my head, Bosco.) (Lightning: Go find somebody else to drool on.) Fine, have it your way, losers. I'll remember this. Payback's gonna be a... (A bee lands on his nose) Bee! Bee!"

- Bosco's defeat.

Bosco is the main antagoniste of the 2010 family comedy movie Marmaduke. He is a aggressive Beauceron and  the tyrannical Alpha of the Orange County Dog Park in California as well as the leader of a dog gang consisting solely of pedigrees until the day when Marmaduke, a Great Dane from Kansas arrived and upset his tyrannical reign.

It is expressed by Kiefer Sutherland who also expressed Ace Merrill, Senator Quintas Corvus, Bob Wolverton, David and Robert Doob.

Personality
Because of being a pedigree which he is absurdly proud, Bosco believes himself superior to the dog considered mutts, showing them only contempt and virtually no respect. Like the Alpha, he declares openly that he is the one who makes the law in the park. He treats his two minions, Thunder & Lightning badly.

He is especially has a strong taste for bullying, as when he scares Marmaduke when he meets him. Bosco is also very arrogant, cruel, perfidious, manipulator and particularly contemptuous. He is also very angry and jealous, as when he learned that Marmaduke was interested by Jezebel, he warned him that if he continued, he was dead and when he lost the surf contest, Bosco becomes so upset that he chases savagely Marmaduke.

Despite everything, Bosco turns out to be a coward when Marmaduke finally stands up to him and makes him so afraid that he simulates a cramp on his leg. After being ousted from his Alpha rank, Bosco's fear was replaced by an even greater disdain than before against the Kansas's dog. He fully recovers his former trust when he exposes Marmaduke for lying on the cat that he had supposedly driven out of the park. During his last meeting with Marmaduke in the film, Bosco was no longer afraid of the Great Dane and asked him if he wanted to fight.

He shares with Marmaduke the fear of the bees, making him run away for fear in a comical manner when he landed on his snout.

Quotes
"Maisie: Dog Vader over there is the man himself, Bosco. Alpha male who runs the park. He's the toughestdog around. Marmaduke: Him? He doesn't look that tough. Maisie: His girlfriend over there is Miss Perfect, Jezebel. And he's super-jealous, so stay away from her or he'll turn you into... Bosco: Dog food. Hello, losers. Maisie: Speak of the devil."

- Bosco's introduction

"I'm gonna tear you apart, mutt. (Chasing Marmaduke) (Marmaduke: I didn't do anything!) Get back here, mutt! Get back here, you poser! (Marmaduke: I don't even like surfing!) Stop running, you coward. I'm gonna make you pay. I am gonna make you pay! This ends right here, right now. (Marmaduke: You know what? You're right, Bosco. This does end here.) (Marmaduke stands on his feet and grunts aggressively) Ow! My leg's cramping! Ow! Ow! Time out, time out!"

- Bosco tries to take revenge on Marmaduke after losing the surfing competition but humiliates himself when Marmaduke finally stands against him. "Looks like a great party. Now, I'm sorry to interrupt. (Marmaduke: What are you doing here?) I got a quick question. Anyone recognize this cute little fella? The cat from the park that Marmaduke hazed? Look at the tail. Turns out he lives here with Marmaduke. Or is it Marma-fake? (Marmaduke: First of all, you weren't invited here, Bosco. Leave now and you won't have a problem. And take Whiskers with you. We have a "no cat" policy.) Is that right? Then how do you explain that picture over there? (The dogs are leaving) You see, in the end, pedigrees always win. And that's the way it'll always be. Enjoy the rest of your party, mutt. (Address to Jezebel) Baby, come on. Jezebel! He's a liar. Come on, let's go."

- Bosco takes revenge on Marmaduke by exposing his lies to other dogs.

Trivia

 * Bosco may be of Hawaiian origin or at least Oceanian since the hook necklace he wears is widespread among surfers there.