Policeman

"Lachieninja! You're under arrest for mass furry genocide!"

- Policeman Lachie

Policeman is a unique character in the series by the quality that they are not individually recognisable and are usually treated in the way that one-off characters are. While they could be argued to all be the same person because they all share the same 'wog' talking style and similar personalities, this is probably just done for comedic effect. After finding out that the world consists of all Lachies in The Good, and the Plain, it seems to be that they are all separate individuals.

Policemen appear in 5 episodes, 4 of which they have important roles. This beats out Detective Lachie appearances and used to beat out definitive Anjin appearances before the 5th duo of videos, being Halloween (Close Enough) in Luigi's Mansion and  Devoid of Christmas Spirit.

The Entire Story of the First Game
At the very start of this episode, policeman bangs down Lachie (Character)'s door and telling him he is under arrest for 'mass furry genocide.' Lachie objects, however after a jumpcut he is seen handcuffed in a dark room mere seconds later. At the end of the episode, a policeman is seen interrogating Lachie, with him not knowing who Lachieninja is.

NOT the Worst of the Trilogy!
At the end of this episode, a policeman is seen asking Lachie, who is still being interrogated like last episode, about the vortex seen in My Favourite 2D Platformers.

The Good, and the Plain
In this episode, a policeman is simply seen sitting on a bench and shrugs when Detective Lachie asks about Anjin. This was the first instance in which it was obvious that not all policemen are the same, since this policeman is likely not involved in this case or they would have been able to supply information.

How to Complete a Trilogy
The policeman here is once again evidence that not all policemen are the same even though they look and sound identical, since this policeman gives Detective the evidence, being the key-ring and house image, he is seen having in The Good, and the Plain, and would have recognised it and Detective Lachie in the last episode.

This policeman works at Popoo Station and seems to have inside info on what the police are doing regarding the problem, especially recruiting Detective Lachie to get to the bottom of it.

Halloween (Close Enough) in Luigi's Mansion
The policeman in this episode is not seen, but rather heard. They appear at the very end, and are heard storming Lachie's room, however noone is to be found there. It is also implied that there was more than one trying to storm the room as we hear, "men, move in!"

Trivia

 * The policemen's wog mannerisms are inspired and based from the channel superwog1.