One of my favorite videos games growing up playing was the Super Smash Bros series. Super Smash Bros has a amazing element of Nintendo characters of different universes coming together to fight it out from Mario, Kirby, Pokemon, Star Fox, Fire Emblem and many other Nintendo series.
One thing about the Smash Bros series I'm interested in is the character's weight and percentages meter. Weight in the Smash Bros series is a measurement of how much a character/fighter can resist knockback.
Weight is one of several factors used in calculating the amount of knockback a fighter experiences. Fighters with a high weight (heavyweight fighter ) tend to suffer less knockback (most endurance), and fighters with low weight (lightweight) tend to suffer the most knockback (less endurance). The damage percentage meter in Smash Bros goes from 0% to 999% the higher the number the more a character gets knocked back from an attack.
The weight classes in series are lightweight e.g. Kirby and Jigglypuff, middleweight e.g. Mario and Link, heavyweight e.g. Samus and Ganondorf and super-heavyweight e.g. Bowser and Donkey Kong.
Kirby
Mario
Ganondorf
Bowser
While these four characters above do seem to belong in the right weight classes there are many others fighters that do not seem to be in the right weight class in regard to their size, height and bodyweight.

One example is Fox McCloud, Fox in the first Smash Bros game (Super Smash Bros 64) has a weight code of 100 points which is the same as Mario and Luigi which is classified as middleweight out of 12 fighters in that game. Later in Melee, Fox is much lighter than Mario and Luigi at a weight code of 75 points, while Mario and Luigi retain their weight. Fox in Melee is lighter than Pikachu who has a weight code of 72.4 points in 64 and has a weight code of 80 points in Melee. Since Melee, Fox has been a lightweight with a weight code from 75 to 80 points. Fox McCloud in canon is 5'8ft (173 centimeters) and 155lbs (70.3kg) which is similar to an average real human adult male. In Ultimate, Sheik a tall athletic woman has a weight code of only 78 points which is lower than Isabelle (88 points), Kirby and Pikachu (79 points) which completely does not make any sense. Link who fights with a shield and sword has always been as heavy as Captain Falcon who is over 6ft (183 centimeters) and over 200lbs (91kg) without that shield and sword Link would likely be as heavy as Mario or maybe be a little lighter.
This is a list of the character's weight code in Smash Ultimate from heaviest (top) to lightest (bottom) which would make the most sense based on the character's body proportion.
Weight Value
Smash Ultimate:
Rank: Character: Weight:
Super Heavyweights:
#1. Bowser 135 points
#2. King K. Rool 133 points
#3. Donkey Kong 128 points
#4. King Dedede 127 points
#5. Charizard 122 points
#6. Ganondorf 118 points
#7. Incineroar 116 points
Heavyweights:
#8. Ridley 111 points
#9. Bowser Jr. w/car 108 points
#9A. Terry 108 points
#11. Piranha Plant 107 points
#11A. Dark Samus 107 points
#11B. Samus 107 points
#11C. Wario 107 points
#11D. Simon 107 points
#16. R.O.B 106 points
#16A. Snake 106 points
#18. Yoshi 105 points
#18A. Banjo & Kazooie 105 points
#18B. Richter 105 points
#18C. Ike 105 points
#18d. Captain Falcon 105 points
#23. Ryu 104 points
#23a. Ken 104 points
#25. Link w/sword 103 points
#25B. Mewtwo 103 points
#27. Rosalina🌟 102 points
#28. Hero w/sword 101 points
Middleweights:#29. Wolf O'Donnell 100 points
#29a. Falco Lombardi 100 points
#29b. Mii Swordfighter 100 points
#29c. Cloud 100 points
#33. Fox McCloud 99 points
#34. Mario 98 points
#34a. Dr. Mario 98 points
#37a. Min Min 97 points
#37b. Mii Gunner 97 points
#37c. Shulk 97 points
#37d. Byleth 97 points
#37e Little Mac 97 points
#44. Pit 96 points
#44a. Dark Pit 96 points
#44b. Mega Man 96 points
#44c. Wii Fit Trainer 96 points
#44d. Marth 96 points
#49. Roy 95 points
#49a. Chrom 95 points
#49b. Robin 95 points
#49c. Sephiroth 95 points
#49d. Zero Suit Samus 95 points
#54. Mii Brawler 94 points
#55. Palutena 93 points
#55a. Lucina 93 points
#55b. Peach 93 points
#55c. Joker 93 points
#59. Ness 92 points
#59a. Lucus 92 points
#59b. Ice Climbers 92 points
#59c. Inking 92 points
#59d. Lucario 92 points
#59e. Zelda 92 points
#59f. Sheik 92 points
#67. Daisy 91 points
#67a. Ivysaur 91 points
#67b. Steve 91 points
#70. Diddy Kong 90 points
#70a. Toon Link 90 points
#70b. Young Link 90 points
#70c. Bayonetta 90 points
Lightweights:
#74. Greninja 88 points
#74a. Villager 88 points
#76. Sonic 87 points
#77. Duck Hunt 86 points
#78. Pac Man 85 points
#79. Isabelle 82 points
#80. Meta Knight 81 points
#81. Pikachu 79 points
#81a. Olimar 79 points
#83. Kirby 77 points
#84. Squirtle 76 points
#85. Mr. Game & Watch 75 points
#86. Jigglypuff 68 points
#87. Pichu. 63 points