The Secret High-Octane Origins of Grizzly Adams. Everyone knows him as the gentle giant who befriended a bear, but before he was Grizzly Adams, Dan Haggerty was a "Malibu hippie" with a need for speed and a talent for steel. Did you know Grizzly Adams was actually a master motorcycle builder behind the scenes? Let me know if you ever spotted him in Easy Rider! If you love uncovering the surprising pasts of TV legends, be sure to like and subscribe for more untold stories! #grizzlyadams #ClassicT