Quick quibble: it's a "golem"...a Flesh Gollum would be an entirely different beast, and likely infringe on a copyright or two.
"Must spread XP around..."Traits
Hates Bagginses
When a Gollum meets a Baggins it hates it- Forever.
Interesting to note that the golem's hit points seem a littler higher then normal, but that he will probably lose about half of them to opportunity attacks between primal fear and his rampage power.