Halloween’s imagery of monsters and giants is linked with Reformation themes through the views of Calvin, Luther, and Zwingli. Calvin, following an Augustinian Sethite reading of Genesis 6:1–4, denied a literal angel–human hybrid origin but described the Nephilim as violent tyrants—both “giant” and “fallen”—preserving their moral and symbolic meaning. Luther used giants and serpents to portray Arian heretics opposing the Trinity, likening them to Israel’s ancient foes and grounding confidence in Christ’s triumph over every power (Psalm 2; Psalm 110; Hebrews 1). Zwingli, more rational and wary of superstition, rejected occult practices and saw idolatry itself as demonic temptation, focusing instead on disciplined obedience to Scripture. Together they held to symbolic readings of giants but often overlooked their supernatural roots in Genesis 6 and 1 Enoch. Yet Scripture unites both realities—the literal and the symbolic—as in Jesus’ walking on water, which shows his authority over chaos. Giants, then, represent real spiritual rebellion and enduring tyranny that resists God’s rule, seen not only in ancient empires like Egypt and Babylon but also in modern powers such as AI or alien ideologies that draw humanity away from devotion to Christ.