Unless it's confirmed by Marvel it isn't considered canon

His middle name's J it’s unknown?

Just Philip J. Coulson

@TrueJuice But still in the 'trivia'?

Didnt marvel state it on a badge in captain marvel that it was joseph

I am one that doesn’t like canon information being shared in interviews or social media posts. Tell the canon information in the film/show itself.

Clark’s response sounds more like a joke.

LOL. Jaekwon

I could totally see the J. being Jaekwon. Because that would explain why he never reveals it in the MCU... its embarassing.