1 Alphys' way of "feeding" the Amalgamates in Undertale is actually very largely to nakedly pleasure them and serve as their nightly vore victim when no one's looking, effectively living out her wildest hentai fantasies
2 Raz and Dr. Loboto are both unbearably sexually attracted to brains in Psychonauts; in fact, the former and Lili kept their Smelling Salts handy largely so that they could take turns getting down and schwifty with each other's violently-sneezed-out ones
3 The original Tingle from Majora's Mask was actually the horrifically birth-defected, immensely low-functioningly autistic result of Ocarina Of Time's Great Fairy having several unprotected affairs with Young Link
He is not autistic.
4 Sans and Papyrus from Undertale actually represent the left and right hemispheres of Gaster's brain
5 Lammy's impossibly sexy character design in Um Jammer Lammy is actually a quite accurate personification of what the average New Zealander sees when looking at real-life sheep
6 Dr. Eggman from the Sonic series was actually Wario's abusive father in the Mario series
7 "Yidder", as heard in the now-infamous Tomodachi Life song Operation Robodachi Fist, is actually an in-game racist term for Miis whose favorite foods include watermelon and chicken
8 Waluigi is a genie
9 Bentley from Sly Cooper is actually the distant European alternate-universe secret-agent cousin of Filburt from Rocko's Modern Life
10 Wario is Mario's cousin
This is a plausible theory, though I think if it really is true, it would of been confirmed by now.
11 Tails has lost it in Sonic Forces
12 Luigi is Rosalina's dad
13 Clemont (Pokèmon) is an older version of Jeff (Earthbound)
14 Ninten is Ness' father
15 Peach is actually Bowser Jr's mother
16 Inklings are idiots
What? Who in their right mind added this!?
17 Link and Zelda are Toon Link's parents
18 Kirby is Meta Knight's son
19 Ninten is the father of Ness
He was set in the early 80's, and Earthbound was set in 199X, whenever that is. Ninten also has psychic abilities like Ness, has black hair, and Ness's dad says on the phone, "I feel like a hero", which he refers to his own adventure, but is glad Ness will keep the legacy of fighting Gigyas.
20 Dr. Mario is the third Mario brother
21 Super Smash Bros is an Autistic boy's imagination while playing with toys
The intro for the original N64 game sees Nintendo toys being played with. When Master Hand is defeated, the character gets put down on a desk, and the kid playing with it closes his door.
Please explain this entry. - Cyri
22 Clemont is autistic (Pokèmon)
23 Mario is just a play
24 Clemont has autism and Bonnie has aspergers' syndrome
25 Kirby is Yoshi and Birdo's son
26 Red Never Returned to Smash Because His Pokemon Were Breeding - Pokemon
27 Classic Sonic is actually Sonic's son from a distant future
28 The evil beast in Fire Emblem Awakening sent Lucina back in time to meet her ancestor, Marth
Instead of killing her.
29 Mario Kart is real, Sonic R is not
30 Tails lost it in Sonic Forces
31 Ike is not actually gay
32 Pauline is Mario and Luigi's sister
33 Banjo and Conker are still Nintendo Characters
34 Little Mac is dies in Punch Out Wii
35 Big the cat is dead
How else has he been absent all this time?
36 Doomfist is the Next Overwatch Hero
37 Metroid Prime from Metroid Prime is Samus' father but mutated by the Space Pirates - Metroid
38 Detective Pikachu is a Pikachu is a replacement on the Pokemon Diamond and Pearl remakes
39 Detective Pikachu is a Replacement for the Pokemon Diamond Pearl Remakes Nintendo Promised Us
40 Pokemon XYZ is Earthbound
41 Kat and Ana are lesbians
They are twin sisters. Kat is the oldest and Ana is the younger
See their thumbnail in WarioWare Gold for proof.
42 Child Abducting Scheme - Animal Crossing
43 Dark Samus is actually Metroid Prime's newly evolved form after stealing the DNA from Samus' Phazon Suit - Metroid Prime
44 Yandere Simulator is a Doki Doki spin off
45 5-Volt from WarioWare is a teen mom
46 Luigi is physically more powerful than Samus Aran
47 Ryder was originally created for being an ally, not an antagonist
48 Palutena is Viridi's mother in Kid Icarus Uprising
What a bizarre theory. Quite possible, though...
49 Pearl kidnapped Marina - Splatoon
50 Mari is dead - Drawn to Life: The Next Chapter