Academic colleague or local expert providing historical context on Aztec artifacts and rituals.
Their friendship motivates Dr. Sepúlveda's final sacrifice.
The plot explicitly calls Dr. Sepúlveda Almada's friend during the final tomb confrontation.
He supports the effort to save Flor from Popoca's ritual.
Dr. Sepúlveda is part of the group that confronts the danger at the tomb, where Flor is rescued before the collapse.
He defeats Popoca by sacrificing himself in the final confrontation.
Dr. Sepúlveda ignites nearby dynamite, collapsing the tomb onto himself and Popoca.
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