Stuart Beck described his father to WFLA in Tampa as a "wonderful man" with a great sense of humor.
“He always had a smile on his face and he made the whole room happy,” the teen said.
Friends mourning on social media offered a similar glimpse into the husband and father.
Stuart Beck said riding dirt bikes started as his father’s hobby, but gradually became his as well.
"I got (the bike) as a Christmas present and I worshipped it, because it came from my dad. He taught me how to ride," Stuart Beck said.
After the shooting, detectives were able to identify Williams and took him into custody later that night. The stolen dirt bike was found near Williams’ home.
Johnson was also identified and was arrested on Wednesday, the police department said. Both teens are charged with first-degree murder and armed robbery.
Johnson is also charged with discharge of a firearm in public.
James Beck's widow, Susie Beck, described him as a "beautiful soul" on a GoFundMe page set up to help pay for his funeral, as well as for house repairs he planned on finishing over the next several months. The page surpassed its $10,000 goal to collect nearly $14,000 in a single day.
“Beloved husband, father, son and best friend, he will be eternally missed,” Susie Beck wrote on the page.
She also warned people to beware of dangers when buying or selling items online.
"Please be safe when buying online -- and hug the ones you love. You never know when a day could be the last," she wrote.