His examine information currently does not have a period at the end.
His apprentice downstairs from him remarks that because he is a necromancer adventurers constantly attack him and leave his house a mess, which leaves him to keep it clean until Invrigar returns from his respawn point.
It has been known that while being attacked he can summon 10+ zombies to attack players.
Interestingly, he has shields in his room that appear to have the symbol of Saradomin. Yet most necromancers are followers of Zamorak.