Rather notably considering where Marvel Phase 4 is going, one of Dane Whitman’s first encounters with the Avengers saw him aiding them against Kang the Conqueror - who was introduced in the finale of Loki this year and is likely playing a large role in the MCU going forward.
Kit Harington plays Dane Whitman, who in the Marvel comics is known as the Black Knight - a more magic-focused hero who has no natural superpowers, unlike the Eternals, but has enchanted armor that can deflect most attacks and a sword called the Ebony Blade.