Alonzo Hawk is the main antagonist in Disney's 1961 live action film The Absent Minded Professor, it's 1963 sequel Son of Flubber, and the 1974 film Herbie Rides Again.
He was Portrayed by the late Keenan Wynn who also portrayed John Slade.
The Absent-Minded Professor
Alonzo Hawk is a banker who seeks to demolish Medfield College so he can build a new series of apartment complexes, especially after his son Biff is taken off the basketball team for bad grades. Later in the film he stumbles upon Brainard's discovery of Flubber after seeing the scientists' flying Model T, so he schemes to steal Flubber from Brainard and take credit for it's discovery for financial gain.
When Brainard attempts to take the Flubber the to government officials, Alonzo manages to discredit him in front of the officials by switching out and stealing the flying Model T. When Ned realizes what Hawk has done, He and Betsy go to his house to find the car under the ruse of selling him on the idea of Flubberized shoes. They trick him into trying it out for himself by jumping out the window safely, but he cannot stop bouncing which causes a scene and results in the fire department and Medfield's football team working to get him down. He and his men pursue Brainard to his warehouse and engage in a car chase, which results in Hawk crashing into a cop car for which he is arrested.
Son of Flubber
After the events of the Previous film Hawk still seeks to tear down the college, especially because Brainard's government deal with Flubber fails and it remains a government secret. When Brainard's experiments with Flubbergas go wrong and accidentally break the glass all over town, Auld Lang Syne Insurance finds itself in a deep debt from having to pay for the repairs. Hawk later manages to track the incident down to Brainard and seeks to seize the Flubbergas in order to perpetuate a glass installation and insurance scam across the country, though when Brainard denies him, Hawk takes Brainard to court for being responsible for the property damage across town, However The case is dismissed when it is discovered that the original Flubbergas testing had the side-effect of functioning as a super-fertilizing "dry rain" that could grow giant vegetables that were able to more than pay off the damages, Which results in Hawk failing to get money from Flubber once again.
Herbie Rides Again
In this film, Hawk is the ruthless billionaire CEO of real estate company Hawk Enterprises, who makes a living destroying old buildings (some of which contain great history) to plan on building skyscrapers and shopping malls. He was going to destroy the Steinmetz Firehouse, home of Mrs. Steinmetz, the aunt of Tennessee Steinmetz, the mechanic of Herbie in The Love Bug, but got foiled by Herbie, his nephew Willoughby Whitfield, and many of Herbie's friends, including hundreds of other Volkswagens and is later arrested by the police.