Don Brennan was a fictional character and major antagonist of the British soap opera Coronation Street.
At first initially a kind decent man and loving husband to Ivy Tilsley. But their relationship collapsed due to Ivy's erratic behaviour in order to preserve the memory of her son Brian.
His attempts to look for romance elsewhere caused his darker side to surface as he became infatuated with local Hairdresser Denise Osborne and began harassing her with phone calls however Don confessed to protect Ivy When Denise accused her. While Don and Ivy got back together they separated once again when Don had an affair but reconciled after a suicidal Don crashed his car and was forced to have his leg amputated. They later split up again and Don was saddened by ivy's passing in 1995.
It was by this stage Don got into gambling problems and had lost most of his money. Soon enough he clashed with local businessman Mike Baldwin, to whom Don had lost most of his money to in a poker game between them. Don later proceeded to buy a garage from Mike only to learn that Mike tricked him and the garage was worth far less than Mike made him pay. Don found himself in dire financial straits and his relationship with girlfriend Josie Clarke in trouble after she had briefly worked for Mike until later finding out about his deceit. Don's impulsively blamed Josie for his troubles and this eventually caused her to leave him for good. Afterwards, Don lost his business and he confronted Mike in The Rovers Return Inn public house about it; Don then attempted to punch Mike as the showdown intensified between them, but he missed and was humiliated after Mike punched him to the ground before Don was then forced to leave by landlord Jack Duckworth.
Months later, Don tried to commit suicide but was rescued. He then vowed revenge on Mike at all costs and set fire to his factory. But this failed as it only led to Mike claiming the insurance money. Don later targeted Mike's beloved wife Alma and kidnapped her in his taxi before trying to kill the latter by driving the vehicle into a canal. Both survived and Don was held in police custody, but he escaped and resorted to kill Mike once and for all. In October 1997, Don ambushed Mike at his factory and attempted to kill him. But he was interrupted and forced to flee. Mike rushed out of the factory just in time to see Don stealing Alma's car and driving the vehicle straight at him, but Mike ducked out of the way in time and Don crashed the car into a viaduct. Seconds later the car exploded with Don inside the vehicle, killing him as Mike watched on along with several other residents. Don's funeral took place weeks later.