These are probably the three players who have directly influenced my playing, tone and approach the most. I may have other players that I hold in higher regard in terms of picking favourites, but that I'm either unable to steal from (because I don't understand what they're doing), or whose style or genre is not as compatible with mine.
Jason Newsted (Metallica)
For showing me how powerful bass can really be, and for the crash course in stage presence. He was the first bass player I ever took notice of, at least 20 years before I ever picked up bass myself.
Brian Marshall (Alter Bridge)
For teaching me that bass lines in hard rock don't just have to follow the guitar, and can be surprisingly busy and melodic in their own right as long as they serve the song
Chris Wolstenholme (Muse)
For inspiring me to play around with seemingly crazy effects. Also for showing that bass does not have to be subtle to serve the song, and then turning right around and also proving that a seemingly super simple, endlessly repeating bass line can be magical, and doesn't have to sound boring.
Hysteria will forever be my white whale to get just right, both in terms of playing it properly smooth, and trying to catch the essence of that tone, where it's crazy distorted and synthy, but you can still hear every note and transient.