Well, besides Gollum in the Lord of the Rings Gollum game story, Sauron is an important figure. Sauron is the main antagonist in the overall Lord of the Rings saga, and his presence and the power of the One Ring which he created are central to Gollum's story. Then there are the Nazgûl. These are Sauron's powerful servants. Gollum may encounter them or be affected by their actions. Also, there could be other hobbits or inhabitants of Middle - earth like Merry and Pippin. Their adventures and the general state of Middle - earth during that time could be intertwined with Gollum's own journey in the game.
There could be characters like Frodo. Since the story is related to the Lord of the Rings universe, Frodo, who also has a connection with the One Ring, might be relevant. And perhaps Aragorn, as he is an important figure in Middle - earth and his actions could cross paths with Gollum's in some way.
In the Lord of the Rings Gollum game story, aside from Gollum, we might encounter Sam. Sam is Frodo's loyal friend and is often involved in the events related to the One Ring. Also, Gandalf could be considered. Gandalf is a powerful wizard who has his own part to play in the grand scheme of things in Middle - earth. His actions and knowledge could impact Gollum's story, whether directly or indirectly. There could also be some of the orcs and other evil creatures that Gollum has to deal with, which are also sort of characters in his story.
Chapter 633, "It's Time for Us to Attack!", is the clearest early answer because the buildup finally cashes out in a real clash.
Chapter 742, "Brother Policeman, Look at Them!", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Fang Kai became panicked as things were not developing in his favor.
Chapter 686, "Why Not Make Him Mute?", is the clearest early answer because it turns Luo Xingmu's situation into a concrete plot event. The chapter turns that into something concrete by moving from In the makeup room, Jiang Yan sneezed three times in a row.
Chapter 654, "Did Everyone in Team Q Go to the ICU?!", is the clearest early answer because it turns Yuanyuan's situation into a concrete plot event.
Chapter 448, "Has Jiang Li Gone Crazy?!", is the clearest early answer because it turns Guest's situation into a concrete plot event.
Chapter 585, "He, Gu Yu, really has no bottom line!", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. It opens with The melee by the lake gradually subsided after an hour.
Chapter 687, "How Did She Die Again?", is the clearest early answer because it turns Wu Daoshan's situation into a concrete plot event. The chapter turns that into something concrete by moving from In the process of pursuing the Protagonist Group, she gradually came... to I'm busy here;
Chapter 599, "The Weather has Cooled Down, the Merchant Should Go Bankrupt", is the clearest early answer because it turns Shang Zhenhe's situation into a concrete plot event.
Chapter 792, "Is This, This God Jiang?!", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. The chapter gives readers a real answer by opening on The sound of the suona did not appear abruptly but even ignited the...
Chapter 332, "Start the Live Stream!", is the clearest early answer because it turns Music Domain's situation into a concrete plot event. The chapter turns that into something concrete by moving from His hands shaking, Jiang Shixu reopened the video.