The first pickable character in one of the platformer games to make the game substantially easier, notably through being immune to most attacks.
Who is Nabbit?
The 2 main speedrun categories (Star Amounts) in Super Mario 64.
16 and 120 Star. (The others being 0, 1, and 70)
The actor most commonly referred to as "the voice of Mario."
Who is Charles Martinet?
This Donkey Kong character has only been playable in one Mario spin-off game.
Who is King K. Rool?
The first game in which Mario falls asleep from idling.
What is Super Mario 64?
The main antagonist of Dance Dance Revolution: Mario Mix.
Who is Waluigi?
The most famous Mario 64 speedrunner in history, and current multi-record holder.
Who is Suigi?
The first game in which Mario is actually named Mario.
What is Mario Bros.?
This spin-off series was a collaboration with a major sports event.
What is Mario & Sonic at the Olympic Games?
Name at least 4 of Mario's occupations (not hobbies like Kart driver or athlete, and not "hero")
Builder, Toy Company President, Plumber, Doctor, Referee (Punch-Out!!, Demolition, Archaeologist (Mario's Picross), Baker (Yoshi's Cookie), Factory Worker (Cement Factory), Soldier (Mario's Bombs Away), Carpenter (Donkey Kong), Sensei (SMRPG)
The first character in the series to offer assistance if you lost too many lives in a level.
Who is Luigi? (Super Guide Block shown below)
The mainline Mario game with the second-most total speedrun submissions after Mario 64.
What is Super Mario Odyssey?
The name of Mario's Final Smash.
What is Mario Finale?
A puzzle platformer spin-off inspired by a level type in a 3D mainline Mario game.
What is Captain Toad: Treasure Tracker?
This cancelled/reworked game has an Event Match named after it in Super Smash Bros. Melee.
What is Super Mario 128?
The first openly transgender character in the Mario series.
Who is Vivian?
The most infamous level in SMB1 speedruns.
What is 4-2?
The first non-sports game on a Nintendo console with "Mario" in the title in which you do NOT play as him.
What is Super Mario World 2: Yoshi's Island?
The very first spin-off game to have Mario in the title.
What is Mario Golf? (6/11/1999)
The 3 Mario RPG series which don't have RPG in their titles.
What are Mario + Rabbids, Paper Mario, and Mario & Luigi?
A fiery octopus boss enemy in the Galaxy series.
Who is King Kaliente?
The only star used for the 1 star world record.
What is Board Bowser's Sub?
The only first party "Super Mario" series platformer game to NOT be playable on Nintendo-made hardware.
What is Super Mario Run?
The first Mario Kart crossover character.
Who is Pac-Man? (Arcade GP released 10/10/2005, DS released 11/14/2005)
The only Mario game to have an Adobe Flash advergame made for its marketing.
What is New Super Mario Bros.? (1-Up Hunt!)