Bryce K. Nielsen
Dam the Man wrote:
I think you need to check the Quest Book for that. If the Reinforcement happens at the end of the OL turn, can't activate since the time is gone. Quick look, Fat Goblin E1 has the Reinforcements at the start of the turn and mentions the new monsters get to activate that turn, while Monster Hoard has start of turn, but no mention of allowing them to be activated.
The Fat Goblin is just reinforcing normal rules. The rules are to do start-of-turn stuff, then activate each monster group, individually activating monsters. So if a monster exists before you activate the group, you get to activate that monster with that group. In other words, if a figure comes in at the start of the turn, you can activate it that turn. If it comes in at the end of the turn, all monster groups have already been activated, so it cannot be activated that turn.