Michael Phelps' Game Face Instantly Takes Over Twitter | News, Scores, Highlights, Stats, and Rumors

NBC Olympics @NBCOlympics

.@MichaelPhelps​ is not impressed with Chad le Clos's antics. For more swimming coverage:

He's an American household name, a legendary swimmer and the most decorated Olympian of all time.

But before today, there was still one title that eluded Michael Phelps: internet meme.

That all changed, however, when the athletic icon was spotted staring down rival Chad le Clos, a South African competitor who bested Phelps in London, ahead of their 200-meter butterfly semifinal.

Twitter's best instantly took to the reaction, likening the look to other comedic online sensations.

INTERNATIONAL HOUSE OF BUTTS @IAmSpilly

There were also insinuations about Phelps' possible evil powers—supervillain, Sith or satanic. 

Amanda Patrick @AmandaSellers22

So excited for all these edits to grace the internet #Phelps #leclos

TIFF @TIFF_NET

Michael Phelps // The Emperor #Rio2016 ⚡️Just saying.

darth™ @darth

omfg that cupping is serious business leigh tbh @leighmunsil

hehateme2012 @hehateme2012

@cjzero @accordingtobri

But as two-time Super Bowl champion Eli Manning will attest, the gaze is a sign of a man on a mission. 

Bobby Atkinson @BobbyAtkinson

Michael Phelps angry is Eli Manning normal.

Unless, of course, he and fellow Team USA swimmer Lilly King plan on wreaking some out-of-pool havoc on their opponents...

Charlotte Wilder @TheWilderThings

"Yo Lilly get in here, we got another problem."

Or maybe...

Bleacher Report @BleacherReport

So that's what Phelps was mad about.. 😂