is a unique encounter, he is on a so-called random spawn timer. While not one of the most dangerous mobs on Rubi-Ka, his life is still usually quite brief since many players seek to take him down. A level 150+ player can solo him, but since Elian's spot is frequently checked, such a player might get outdamaged by competition. Elian hits for 600-800.
It is located in Galway Shire (420,1255) and it is level 110. No special tactics are needed to kill him. Standing in proximity of a player city, there is a slight possibility of high level aliens wandering around however. There is tower base on the other side, but due to it being low level one, there shouldn't be any problems.