Clara could also use The Moles Welcome You, as it provides Mischievous stacks after Basic attacks, Skills, and Ultimates, with each stack adding 24% ATK.

Source: https://screenrant.com/honkai-star-rail-best-builds-clara-light-relics/

In that time, Kang himself and whatever help he has on hand have carefully engineered seemingly endless numbers of Ultimates ranging from Captain America to Thor.

Source: https://www.cbr.com/ultimate-invasion-marvel-comics-kang-superhero/

Tingyun is a SS-Tier supporting character of the Harmony Path who buffs Attack and Damage dealt all while replenishing Energy Gauges for Ultimates.

Source: https://screenrant.com/best-team-comps-tingyun-honkai-star-rail/

To that end, the Ultimates eventually allowed Reed to travel to the primary Marvel Universe to find a means of stopping Galactus in their home reality.

Source: https://www.cbr.com/ultimate-invasion-miles-morales-the-maker/