Two new characters are set to join the cast of ABC’s "Lost" this season. [Entertainment Weekly]: * Caesar: a dangerous, physical and extremely intelligent male between the ages of 35 and 45. His intentions are unclear, he’s as skillful at charming people as he is at killing them. * Ilanna: a European female in her late 20s to early 30s who possesses great intelligence, but who’s also dangerous. She’s "alluring and apparently used to getting her own way".