Do any NHL players only wear one number on their jersey throughout their career If so who are they and why are they known by that number

Yes, there are a few NHL players who have only worn one number on their jersey throughout their career. Notable examples include:

#99 Wayne Gretzky: The "Great One" is unanimously considered the greatest hockey player of all time. His number 99 has been retired league-wide in honor of his exceptional achievements.
#71 Mario Lemieux: Another legendary player, Lemieux wore number 66 for the Pittsburgh Penguins from 1984 to 1997. However, after his retirement in 2006, he unretired in 2009 wearing number 66 before changing to his old number 71 in 2010.
#88 Alex Ovechkin: The Russian superstar has worn number 8 since entering the NHL in 2005. He is one of the league's most prolific goal scorers and is on track to break Gretzky's all-time goals record.

These players have become synonymous with their jersey numbers, which have become iconic symbols of their careers.

Who holds the record for the most points in NHL history?
- Answer: Wayne Gretzky
What team did Mario Lemieux play for?
- Answer: Pittsburgh Penguins
Which Russian player is known as "The Great Eight"?
- Answer: Alex Ovechkin
What is the highest number worn in the NHL?
- Answer: 99
Has any player worn the number 0 in the NHL?
- Answer: Yes, Don Adams

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Do Any NHL Players Only Wear One Number on Their Jersey Throughout Their Career?