It depends if Gollum is included in option. If you want him, before starting the game check "Ring Heroes ALLOWED". Then Gollum will be somewhere on map. He is usually hiding and sneaking around.
If you meant Gollum as a Hero, you need special map or mod.
Gollum
Smeagol
Yes you can there are many maps u can download
Smeagol.
Gollum .
Lord of the Rings :The Fellowship of the Ring, Lord of the Rings: The Two Towers, Lord of the Rings: The Return of the King.
Gollum .
Gollum/Smeagol
Gollum
Gollum appears in The Lord Of The Rings film trilogy played by Andy Serkis.
gollum
His name is Gollum.