The Federation President during the Frontier Day crisis of 2401 and son of Pavel Chekov, heard in an emergency broadcast warning ships away from an Earth under attack by its own fleet.
Anton Chekov is President of the United Federation of Planets in 2401. He is heard but not seen in The Last Generation, the final episode of Picard, and is voiced by Walter Koenig, who played Pavel Chekov in the original series.
After the Borg and the Changelings seize control of Starfleet's assembled ships through its younger officers, the President sends out a message on all frequencies. He reports that Earth's defences are falling, tells any vessel receiving him not to approach, and quotes his father's conviction that there are always possibilities.
Picard and his old crew hear the broadcast aboard the rebuilt Enterprise-D and ignore the warning. The character's first name was chosen in tribute to Anton Yelchin, who played Chekov in three films.