Arsenal posted a video in which Arsenal boss Arteta previewed the upcoming season.
However, many users were quick to comment on how Arteta looked noticeably different in the video.
One user wrote: 'Who is this and what has he done with Arteta?'.
Fans have been left stunned by Arsenal boss Mikel Arteta's appearance in a new video
Some users suggested that the image had been generated by AI.
One user wrote: 'Mikel AI-teta', while another simply wrote: 'AI'.
Another user commented that Arteta looked like he had 'been stung by a bee'.
There were also jokes that Arteta resembled the depiction of a player from old video games. One fan wrote: 'Is this him in FIFA 98?', while another added: 'Looks like FIFA 2010 career mode cut scene'.
Arsenal are currently in the USA as they continue their preparations for the new campaign.
Arteta's side drew 1-1 with Bournemouth before prevailing on penalties. They have further friendlies to come against Manchester United and Liverpool.
Defender Riccardo Calafiori is poised to join the Gunners from Bologna for £42million as Arteta looks to add to his squad ahead of the new season.