The hero of the game, a salesman in the Department of Death. He'd point out that he's technically a travel agent, selling travel packages to the dead depending on how good they were in life, but the job is functionally identical to being The Grim Reaper. Manny has to work off his moral debt to advance further into the afterlife, but he can only do that by selling good packages to good souls, and for some reason all his latest customers don't qualify. Suspecting that he'll be stuck in his crappy job forever, Manny grows increasingly miserable and desperate, finally stealing one of Domino Hurley's files...and stumbling upon a conspiracy.
The Atoner: Manny has to work off his karmic debt in the DoD, explained in detail above. Later, part of Manny's motivation for finding Meche comes from the fact that he unintentionally got her condemned to a fate she did not deserve.
Character Development: At the start of the game, Manny's main motivation is getting himself out of this part of afterlife and into the next by working off the moral debt he racked up when alive, and he doesn't give much of a damn whether he or anyone else deserves it. By the fourth year, he can literally stand on the brink of getting that wish - but he'll refuse to move on, unwilling to leave the people he loves and those he promised to save behind.
Manny: This deck of cards is a little frayed around the edges. Then again, so am I, and I've got fewer suits.
Determinator: Manny's ultra-competitive, and even lampshades it in Year One, and he's chasing after a woman he only met once and can't forget. (This causes Olivia to call him a "chump".)
Don't Fear The Reaper: It's just his job. Manny doesn't fit traditional expectations of The Grim Reaper much - them being along the lines of forbidding, laconic, and tall. Instead, Manny's charming, sarcastic, happy to talk his way into or out of trouble, and...short. Really really short. He wears lifts on his shoes under the cloak. The Reveal of this in the intro is probably one of the funnier sight gags in adventure gaming history.
In the Brazilian dub, Manny speaks in a mix of Spanish and Portuguese.
Iconic Item: His Sinister Scythe, to which he's very, very attached; he keeps it even after losing his job. It comes in handy for solving a lot of puzzles. Not really a Weapon of Choice, however, since he's not very good at fighting with it.
Manny: My scythe. I keep it next to where my heart used to be.
Guile Hero: While he can deliver an excellent right hook (just ask Nick Virago), he's often equalled or outmatched in fights, requiring unorthodox solutions.
Lovable Rogue: Manny's one smooth-talking, deadpan-snarking, morally-flexible dead guy - particularly during Chapter 1 and 2. Like any good LucasArts adventure protagonist, he cons, steals from and screws over various people in various ways, and it's worth noting that we never do find out what exactly landed him in the Department of Death, which is for people who don't even deserve walking sticks on their way to the true afterlife.
Self-Made Man: In less then a year he elevates from a janitor in a run-down club to the owner of said club, which he turns into the second most successful joint in the town, and then from a galley worker on a shaggy old tub to a captain of a sterling liner.
Manny's Love Interest and the catalyst of the game's events; her file was the one Manny stole. Meche is obviously a good, gentle person deserving a first-class travel package...which is why Manny is baffled when she seemingly qualifies for nothing better than a long walk.
Break the Cutie: She starts out as a kind, sweet soul who gracefully accepts what she assumes to be a just punishment...except that it's not, and things get worse for her from there. By Chapter 3, she's suffered horribly and become profoundly bitter, especially towards Manny.
Friend to All Children: Read stories to sick children in life, and forms an instant rapport with two angelitos in Chapter 3 - child souls with angel wings. This is in contrast with Manny, whom the angelitos hate on sight.
Manny's friend and main ally. A demon (or as he says, "spirit of the land") with one purpose, desire and reason for living: driving, preferably really really fast. Also maintaining vehicles (when no driving jobs are available). He lives and works alone in the DoD's basement, unable to fully exercise his gifts, leaving him open to persuasion in matters of technically-prohibited upgrades...
The Driver: For some reason, the inscrutable forces that govern the Land of the Dead figured the best creature to fulfil this role is a gigantic bright orange demon with tiny wiggly ears obsessed with engines and SPEEEEEED. He's also an excellent pianist! Looks very sharp in a tux, as well. Just don't let him near the VIP area in the casino. Or coffin shooters. They tend to distract him.
Genius Bruiser: He's a massive, superstrong demon, but more importantly he's also an incredible engineer.
Gentle Giant: Capable of lifting a struggling person off the ground with one hand effortlessly, yet easily scared and automatically kind.
Hidden Depths: A good piano-player. He's also a big fan of the kitty races, which can cause problems.
Mad Eye: Whenever he is excited about something like cars or gambling.
Nigh Invulnerable: He survives removing his heart, being deprived of oxygen for hours, being flung dozens of feet, and being dropped over the edge of the world. The only thing that even comes close to killing him is speed withdrawal.
Ugly Cute: Sure he's a demon with a mouth full of razor-sharp teeth and a gravely voice, but he's also very endearing with his nervousness, childlike enthusiasm about all things mechanical, and his attachment to Manny. invoked
Undying Loyalty: The big lug almost kills himself following Manny during the fourth year, because he's a Driver Demon and he didn't drive for a year. He didn't tell Manny, either, because he didn't want to worry him.
Leader of a rebel movement against the villains, one of Manny's main allies. Salvador was once a Reaper and a salesman like Manny, and like Manny, discovered that even his most deserving clients rarely qualified for anything. Unlike Manny, Salvador quit his job in order to create an underground movement and overthrow the Department of Death's corrupt leadership. In the end, Salvador is revealed to have qualified for a Number Nine ticket rather than Reaperdom - like Meche, he was a saintly soul given an unjust punishment.
Nice Hat: A sweet dark green beret that he keeps even as a disembodied skull.
Rebel Leader: Salvador is intensely charismatic, inspiring downright suicidal loyalty once he gets his revolution up and running. It's implied his inherent nobility attracts his followers. He was, after all, a Number Nine ticket holder. And in the end, he proves as willing as his followers to die for the cause.
One of the two main villains. Manny's rival in the DoD, the boss's pet on the fast-track to promotion, the hottest salesman with the best clients and all-round smug shade-wearing jackass. He uses Manny's old, much larger and more luxurious office, and seems to find all the good souls that Manny doesn't - in the first chapter landing a nun with a golden ticket when Manny gets an angry old man to send 'freight' (i.e. stuff into a coffin full of packing foam). This is because he's in on the DoD conspiracy.
Faux Affably Evil: His behavior towards Manny is like that of a bullying but loving older brother who's constantly trying to take Manny under his wing and groom him for success. He's also more than willing to have Manny sprouted, but hey, that's business.
Kick the Dog: Dropping Glottis over the edge of the world just because he didn't think he'd be useful. Glottis survived, but any player sympathy for Domino sure didn't.
Klingon Promotion: After Don Copal gets sprouted in Chapter 1, Domino has a new position when he's encountered again in Chapter 3.
Post Mortem Comeback: Domino has been dead for over a year, but the good guys still have to contend with a deadly booby-trap he's laid for them when they finally get back to Rubacava to find the hiding place of their car. Dom's laid out an elaborate set of...well, dominoes all around the car that will trigger a bomb if disturbed.
The other main villain, the head of the DoD. He has been stealing tickets from the deserving and selling them to richer, less saintly souls. Or so he'd have them believe, but the tickets he sells are fake. He keeps the real ones for himself, determined to hoard enough to balance out his numerous and horrific misdeeds in life.
Corrupt Corporate Executive: Apparently while alive, he was a "very bad boy", and he didn't get any nicer when he died, since he keeps a huge garden of flowers, including a greenhouse, grown from the remains of those he subjected to a Fate Worse than Death in his rise to power. That the place is beautiful and well-tended somehow makes it more horrifying.
Creepy Souvenir: Flowers. A symbol of true death in the Land of the Dead. Very ominous.
Fridge Horrorinvoked: Invoked Trope by Manny, who wonders just how many people Hector killed to have an endless field of flowers, much less a greenhouse full of them.
Hoist by His Own Petard: That creepy flower garden? Including a greenhouse with a connecting water tank? Do you wonder what would happen if one were to, say, fill that tank with Sproutella while Hector was inside the greenhouse? We get a screaming Hectorposy is what happens.
Nice Hat: A fez. It's hardly visible most of the time, but he has one.
Offscreen Villainy: Whatever Hector did in life, it was apparently so horrible that he felt to need to horde an entire suitcase full of No. 9 tickets in an attempt to balance it out.
Wicked Cultured: He dresses in suits and loves flowers, and can be seen tending to his garden with a dinky watering can and hedge-clippers during the end-run. Subverted, however. In the Eighth Underworld, flowers are a symbol of death. It's less genuine love on his part and more polishing trophies taken from his victims.
Tautological Templar: After torturing Sal and stealing a case full of Number Nine tickets, she's seen searching the case, genuinely convinced she's a good enough person to deserve one of them.
Olivia: Come on... one of these must be mine...
A corrupt lawyer in Rubacava. He is dating Olivia, who is also dating Maximino, who runs the town's biggest casino - and the latter would be very, very upset if he learned about it. Virago is attempting to keep the relationship under wraps.