Brax faces terrible turmoil in episodes soon to air in Australia, as he discovers that his lover Charlie is critically injured after being shot.
While Charlie is receiving emergency treatment at the hospital, an inconsolable Brax is determined to get revenge when he learns that Jake Pirovic (Fletcher Humphrys) was the culprit.
Peacocke told TV Week: "He's a bloke who doesn't tolerate anything bad happening to the people he loves - especially Charlie. He wants to kill this bloke."
He continued: "This is the Brax people have only heard about till now. He came to Summer Bay with a reputation, and the audience is about to see why he has that reputation. He's had to fight his whole life, and that side really comes out now as this is the worst thing that could happen to him."
Home and Away bosses and cast members are still keeping tight-lipped over whether Charlie will live or die. However, reports have suggested that Esther Anderson - who plays the character - has quit the soap.
Rebecca Breeds, who plays Charlie's daughter Ruby, commented: "Charlie's been shot, so it's serious, but there is hope and doctors are amazing these days. Miracles do happen and nothing is written in stone. There is definitely a chance Charlie could make a full recovery."
Home and Away airs these scenes next week on Network Seven in Australia and in February on Channel 5 in the UK.
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Watch Home and Away's latest Brax and Charlie promo below: