Robert plant has been reported very sick and in critical condition earlier today.

Ultimate Led Zeppelin likely refers to various tributes or projects honoring the iconic rock band Led Zeppelin. However, I’ll provide information on:

*Original Led Zeppelin Members:*

1. Robert Plant (lead vocals)
2. Jimmy Page (guitar)
3. John Paul Jones (bass, keyboards)
4. John Bonham (drums)

*Main Character:*

While all members were crucial, Jimmy Page is often considered the primary creative force and driving force behind Led Zeppelin.

*Notable Tribute Bands and Projects:*

1. Led Zepagain (tribute band)
2. Jason Bonham’s Led Zeppelin Experience (feat. John Bonham’s son)
3. Robert Plant’s various solo projects
4. Jimmy Page’s solo work and collaborations

*Other notable musicians influenced by Led Zeppelin:*

1. Aerosmith’s Steven Tyler and Joe Perry
2. Queen’s Brian May
3. Guns N’ Roses’ Slash
4. Foo Fighters’ Dave Grohl

Would you like more information on:

1. Led Zeppelin’s history and discography?
2. Tribute bands and projects?
3. Influences and legacy?

Let me know!