Fate/Grand Order: Turas Réalta

He is the leader of the Resistance, which formed as a result of the atrocities committed by the Americans and the Celts.

Appears in chapter 38.

Fate/Grand Order: Epic of Remnant IV - Salem

Leonardo da Vinci asks Geronimo to advise Chaldea about the Salem Singularity.

Appears in chapter 1.

(Source: TYPE-MOON Wiki)