After a short developmental run in 2001, Heidenreich debuted on RAW in 2003 with the short-lived "Little Johnny" storyline. However, his most memorable tenure came on SmackDown, where he adopted the "Psychotic Poet" character alongside Paul Heyman. This run saw him engage in a significant rivalry with The Undertaker, which culminated in a Casket Match at the 2005 Royal Rumble.
Later in his WWE career, Heidenreich formed a tag team with Road Warrior Animal, known as LOD 2005. The duo captured the WWE Tag Team Championship before Heidenreich's departure from the company in January 2006.
Speaking on INSIGHT with Chris Van Vliet, Heidenreich reflected on the character that defined his WWE run, explaining how blending parts of his real personality with his on-screen persona helped him stand out.
Even Heidenreich admitted there were times when he felt the character went a little too far.
"It's still funky, man. It's weird. I'm like, 'Bro, this is over the top, man. Something's wrong with that dude,'"
He recalled how other WWE stars in the locker room reacted to his behavior, with Big Show often joking about how unpredictable he seemed.
"Big Show used to say, 'You got dropped on your head when you're a little baby too much, didn't you?' He's like, 'You're really nuts,'"
Paul Heyman actually saw that uncertainty as an advantage. Heyman told Heidenreich that many people in the locker room couldn't tell when he was in character and when he was just being himself.
"Paul told me that everybody up there didn't know when I was doing my gimmick. He said, 'Man, they don't know if you're like really pretending or if you're really like nuts, you know?' He's like, 'It's kind of good because nobody knows what to really think of you.' That's what he told me. He says, 'People really think you might be effing nuts.' Right? And that's good because if it's believable,"
Heidenreich also explained that the aggression he showed on screen came from his background in football and martial arts, which he then amplified in wrestling.
"I think it was a part of me from the football and the overaggressiveness. And when I was in wrestling, I just amplified it,"
He recalled one training session where his intensity caught Heyman's attention before they officially started working together. Heidenreich noted he was more violent in the ring before he worked with The Undertaker.
"I remember I was training in the ring before Paul was working with me and the agents were out there watching me. And I remember Paul telling one of them, he's like, 'Come here, watch this.' And I used to be real. I was like more violent before I worked The Undertaker because I was, maybe, like, I can't be that baby. But when I was in the ring that day working out, man, I was like boom. I was like insane, you know,"
To Heidenreich, this differentiated him on the roster. He compared wrestling to a buffet full of different personalities and styles, a mindset that shaped his WWE career.
