NORTHPORT – Pete Sussi first got into 3-D animation as a hobby. Now, 10 years later, Sussi is founder and CEO of Platinum Platypus, a growing business that counts major corporations and sports and entertainment companies among its clients. Platinum Platypus has done work for Pringles, Bayer, Bristol Myers Squibb and the Pittsburgh Pirates. Recently the company worked with Rocky Point-based Paradise Advertising on a campaign for the Teachers Federal Credit Union to create a commercial featuring TFCU's owl mascot.