Millie Bobby Brown opened up about why she has "real fear" when acting with Jamie Campbell Bower on 'Stranger Things,' saying, "He terrifies me when he is Vecner. I am terrified of his costume."

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The work of makeup was also pretty much in the hands of the makeup team, and hence much was done to transform Bower. Designing every detail in Vecna, they made him a nightmare figure whom fans fear more than anything else.

Stranger Things has delivered plenty of eerie moments over its seasons, but few characters have terrified both fans and cast members alike more than Vecna. Millie Bobby Brown, who plays Eleven, recently shared how deeply Jamie Campbell Bower's performance as the nightmarish character affected her on set.

Millie Bobby Brown went public about her major fears that faced while working on the Stranger Things set.The Florence by Mills beauty founder, who played Eleven in the hit show, struggled working with Jamie Campbell Bower’s character,