|This article is about the King hero named Alfonso. For other units named King, see King (disambiguation).|
- King Alfonso appears in the first El Cid scenario, Brother against Brother, as the Cid's opponent and king of Leon, and as the name of the scenario implies, fighting his brother, Sancho, king of Castille. After successfully capturing Alfonso, Sancho is murdered in the narrative between two scenarios, and Alfonso becomes king of both Leon and Castille.
- In Black Guards, El Cid has to come to Alfonso's aid against the Berbers under Yussuf and prevent him from dying.
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