Kota Eberhardt and Andrew Stehlin have been cast as Selene and Red Lotus, respectively, for 20th Century Fox's X-Men: Dark Phoenix, according to IGN.
Selene is a long-time X-Men villain, and is a immortal mutant with vampiric powers. The character recently appeared in Captain America.
Red Lotus is X-Men related character who debuted in Chris Claremont and Salvador Larroca's 2001 X-Treme X-Men. Red Lotus, whose real name in comic books is Paul Hark, is the grandson of a Chinese Triad leader. He became affiliated with the X-Men, although not a full member, and went undercover in the Hellfire Club to stop a mutant slavery ring.
X-Men: Dark Phoenix is scheduled to open in theaters February 14, 2019.