1 The Cutscenes - Mario/Zelda CD-i Games
True, it looks like paintbrush poop, not youtube poop - Maddox121
2 GLaDOS - Portal
GLaDOS is a fictional artificially intelligent computer system appearing in the video games Portal and Portal 2. The character was created by Erik Wolpaw and Kim Swift and voiced by Ellen McLain.
3 That one stupid, clichéd Ben Drowned creepypasta based off of the Elegy of Emptiness statue - Legend of Zelda: Majora's Mask
4 Fawful - Mario & Luigi
Fawful, known in Japan as Gerakobits, is a fictional character appearing in the Mario & Luigi series of role-playing video games developed by AlphaDream.
5 Reyn - Xenoblade Chronicles
6 The story - Cave Story
7 Lammy - Um Jammer Lammy
You'd better believe that there is seriously BRAIN porn of her now (in fact, there's even torture-fetish fanfiction where she gets Parappa and Ma-San sniffed right up her nose and into her brain via cocaine-snorting off of her girlfriend's feet...honestly, I sincerely WISH that I was joking here) - xandermartin98
8 Samus' new look - Metroid: Other M
Simply for the fact that it replaced the Prime suit in Smash Bros - xandermartin98
9 The Milkman Conspiracy level - Psychonauts
It was an absolutely beautiful scene when the milkman surfaced, but I found a lot of other levels to be more entertaining gameplay wise - kempokid
10 Use Your Head (music that plays in first section of Buttville) - Earthworm Jim
11 Captain Falcon - F-Zero
Douglas Jay Falcon, known commonly as Captain Falcon, is a playable character in the racing video game series F-Zero.
12 Wario - Wario Land/Ware
13 Giygas - Earthbound
14 Dr. Nefarious - Ratchet & Clank Series
15 The Music - Parappa Series
16 The humor - Conker's Bad Fur Day
17 Ridley - Metroid
Ridley is a villain from the Metroid series and a character from the Super Smash Bros. series. He's Samus Aran's archenemy and has been fighting her since day one with the first Metroid game in 1986. When Samus was three years old, Ridley murdered her parents in front of her. He is a member of the Space ...read more.
18 "Bionis is Evil" Plot Twist - Xenoblade Chronicles
19 Luigi - Luigi's Mansion
20 Porky - Mother 3
21 The whole "exploring minds" concept and especially how it was handled - Psychonauts
22 Exdeath - Final Fantasy V
23 The Joker - Batman Arkham Series
24 Dante - Devil May Cry
Dante is a fictional character and the primary protagonist of the Devil May Cry series, created and published by Capcom.
25 The humor - Portal
26 Time-rewinding gimmick - Prince of Persia: Sands of Time
27 The humor - Mario & Luigi
28 The humor - Ratchet & Clank
29 Groose - The Legend of Zelda: Skyward Sword
30 Hades - Kid Icarus: Uprising
31 Flandre Scarlet - Touhou
32 Krystal - Star Fox Adventures
33 The Title Character - Bayonetta
Not entirely sure if we can really call the series "underrated" anymore, but the "heroine" is definitely one of the most overrated game characters if not one of the most overrated fictional characters in general.