Stan Lee is the brainchild behind several of Marvel’s most iconic characters. It also happens to be the anniversary of his birth, and many people have been wishing him a happy birthday through social media.

STAN LEE TURNS 95, TWITTER WISHES HIM A HAPPY BIRTHDAY

Happy Birthday to the man himself, @TheRealStanLee! 🎂💥 pic.twitter.com/Ps94AVsbLT

— Marvel Entertainment (@Marvel) December 28, 2017

Twitter is ablaze with people wishing Stan Lee a happy birthday,

Several actors portraying Lee’s characters in the Marvel Cinematic Universe films have wished the legend a happy birthday, including Chris Evans (known for playing Captain America), Mark Ruffalo (the Hulk) and Don Cheadle (War Machine):

The one and only! Happy birthday!! https://t.co/Xh4XxYx0Eb

— Chris Evans (@ChrisEvans) December 28, 2017

Happy birthday to the legend. @TheRealStanLee pic.twitter.com/GodWIWZlbf

— Mark Ruffalo (@MarkRuffalo) December 28, 2017

@TheRealStanLee happy born day, stan !!!

— Don Cheadle (@DonCheadle) December 28, 2017

Moreover, James Gunn, the director behind the Guardians of the Galaxy films, honored his “hero, friend, and all-around role model,” too. Kevin Feige, the man helming Marvel Studios’ creative decisions, joined in as well:

Happy 95th Birthday to my hero, friend, and all around role model @TheRealStanLee. I was nurtured by his imagination as a child, and lucky to know him as an adult. I wouldn’t be doing what I’m doing without him. And he’s as great a guy as he seems to be. pic.twitter.com/rX31SLqI55

— James Gunn (@JamesGunn) December 28, 2017

Happy 95th Birthday @TheRealStanLee!!! #SoManyMoreCameosToCome

— Kevin Feige (@Kevfeige) December 28, 2017

Plenty of others have tweeted in their wishes to Lee, including voice actress Tara Strong and even the maligned video game feline Bubsy the Bobcat:

Happy birthday @TheRealStanLee love ya kid. Thank you for bringing so many iconic characters to life #happybirthdayStanLee pic.twitter.com/YowJexgTMo

— tara strong (@tarastrong) December 28, 2017

Stan Lee is 95 today, but what is that in Bobcat years? Little bitter since my BobcatMan pilot didn't sell to Marvel. Yes, I'm a Bobcat, not a man, but I am an ACTOR!!!!#StanLee

— Bubsy (@BubsyThe_Bobcat) December 28, 2017