Glottis is a speed demon. One might notice his heart has spark plugs attached.
The deceased children Manny meets in Year 3 have little wings on them, making them look like angels. Manny calls them "Angelitos". In Mexico, the Day of the Dead is for the adults (Nov 2) while the day preceding is to honor the departed children, known as 'Día de los Angelitos' or "Day of the Little Angels".
You can hear an announcement for lost baggage belonging to an H. L. before you get the briefcase for Charlie. That is the briefcase of Hector LeMans, which explains why Charlie wants it back so badly.
Manny's description of his scythe, arguably his single most important possession in the Land of the Dead considering his job, is that "[he] like[s] to keep it next to where [his] heart used to be", which for most of the game doesn't sound too meaningful since he appears to store his entire inventory in the same place. Near the end of the game, when Olivia betrays him, the scythe is briefly taken away from him - understandable, as it is still, essentially, a weapon, even if he only used it that way once in the entire game. It is highly likely that it would've saved him from Hector's Sproutella dart by acting as a Pocket Protector. Considering Manny survived that encounter through sheer luck (because he stole a bottle of liquid nitrogen for a completely unrelated earlier puzzle), this just highlights the fact that, separated from his scythe, he becomes more vulnerable, even if he isn't using it as a tool or for defence.
As part of a puzzle, Manny gives some right punches to Domino's training bag. Later on, he uses that same punch to floor Nick. This doesn't work on other people Manny has to confront since they're all armed.
Double N tickets are attracted to their owners and no one else. Hector's plan was destined to fail.
Manny apparently spent a long time with nothing but bad clients, being berated by Don Copal for his low productivity. But he only comes up with the idea of stealing Domino's clients after the gazpacho poisoning event - when Domino sent Manny's driver home, which in turn delayed Manny and denied him the chance of getting a decent customer. Manny didn't fall into the temptation of using underhanded tactics; he was forced to use them because his colleague was already playing dirty.
If Don Copal was taking orders from Hector why was he demanding Manny get premium clients or risk being fired? He must have known Manny had no means of doing so.
According to Eva, he is the boss' "whipping boy" - so probably just for appearance's sake.
Burning beavers (ain't it a great name for a band?) are able to swim in a river of tar without setting it on fire.
Celso Flores had to go through the Petrified Forest equipped with nothing but a cane, while Manny went through it in a car. How did Celso reach Rubacava before Manny?
The Power of Love, of course - plus the walking stick having a compass helps.
The entire Bonewagon puzzle in year 4 was far-reaching, but in particular, how did Glottis manage to vomit an entire barrel of "lemonade" over the domino pieces without any of them falling?
In the conclusion of the game, Chepito decides to walk himself to the afterlife, heading into the Number 9 Tunnel before Manny returns to El Marrow. Considering the game ends with Manny boarding the Number 9 in less than a day from then, the train travels 4 years in four minutes, and Chepito walks pretty slow, feel free to draw a conclusion as to what could happen to him.
How long have those Angelitos been trapped? And what happened to their parents?
Most people who get sprouted die almost immediately. But Lola is still alive when Manny finds her, and apparently has been there for a while since we don't see anyone coming out. That means Lola was sprouted using Hector's slow-working Sproutella. So not only did Nick kill her, he killed her in the cruellest way too, and left her to die. No wonder he goes straight to hell.
It's repeatedly said that sprouting is the only way to kill someone in the land of the dead. So when Domino got caught in the coral grinder, he wasn't sprouted. Meaning he's still alive.
Since Celso and his wife are last seen hoping to buy some Number 9 tickets from Hector, it's entirely possible they could've ended up on one of the doomed trains that drops its passengers into Hell.
