Legenus is an independent arch wizard. He spells the word 'wizard' as 'wizerd' on his signs and paperwork, he thinks this is amusing and that it makes him look more eccentric. He really doesn't need the help though.
He has an assistant named Rufus that does much of his rune seeking for him, and he sometimes uses Rufus' skills to commune with spirits.
Runeseekers episodes 1 and 2