The virus develops into colourful balls of acid below Krill's pores and skin that lead to him ache Until he expels them as polka-dot weapons or vomits them up.[26] Unbeknownst to Gunn, Dastmalchian felt a private connection to the character because he has the skin issue vitiligo, for which he was bullied as a youngster and known as "polka dots".[27