The Undertaker, portrayed by Mark Calaway, debuted in WWE in 1990 and became one of wrestling's most enduring characters, built around a dark, supernatural persona, slow entrances, and an intimidating presence in the ring. His distinctive vocal sounds, including low groans during matches and promos, were widely clipped and shared as wrestling highlights spread on YouTube and social media. The groan endures because it instantly evokes that persona, letting meme makers and editors borrow decades of wrestling atmosphere in just over a second.