Bill Sienkiewicz, he is the best. He tweets fairly often and will retweet his art from others, but it is awesome when you find him posting something new or at least I hadn't seen before. He is an artist who has a wonderful career in comic books alone but his art is found in so many other mediums. Anyways, here is a bunch of his kick ass art on way more real world people and things than some of the comic book fans of his may be used to:
Robin Williams
Razan Al-Najar
Godzilla Criterion Collection box art
R. Lee Ermey
David Hogg
Hugh Hefner
Kevin Smith a.k.a. Silent Bob
Winnie Madikizela-Mandela
Dick Dastardly and Muttley
Martin Luther King Jr.
Don Rickles
Sudan, the last male Northern White Rhino
Dick Gregory
Darth Vader
Other artists featured in the "Tweets Collected" series
Mirka Andolfo, Jim Mahfood (1, 2), Alex Maleev, Alex Ross (1, 2, 3)
[CNBC] When Comic Books Were Public Enemy No. 1
[Nerdist] The Importance of Puerto Rico Comic Con
Crypto Collectibles presents "Magic dog Gathering" for PhotoBomb challenge #25 - Entry #3