Old Man Hobo

Old Man Hobo (Usually referred to as the Old Man or Old Guy), is a senile old man who sometimes appears in SMG4's bloopers. He's possibly a mascot of SMG4 because he is at the bottom right corner of his videos. There are in fact several Old Men.

Not all of the Old Men Hobos are actually hobos, as some are shown to be genies, wizards, princesses (surprisingly), killers, or rapists. He has appeared less often in favor of Meggy, Bob, and Fishy Boopkins, but returned in SMG4: Mario Gladiators, this being one of his main last known appearances, as well as SMG4: Mario And... The Well.

Super Mario 64 Bloopers

 * Super Mario 64 Bloopers: SMG4 VS SMG3
 * Super Mario 64 Bloopers: Operation G.A.Y
 * Awkward Weddings
 * The Crazy Fighters
 * 99% Idiot
 * Crystal Funhouse
 * Hunt for the Hero's Clothes
 * Super Mario 64 Christmas Special 2011
 * Super Mario 64 Bloopers: Rich Glitch
 * Super Mario 64 Bloopers: Orbical Adventures
 * Super Mario 64 Bloopers: Desert head
 * Breaking Walls
 * The Mushroom Mafia (episode)
 * Super Mario 64 Bloopers: Clone O' Mario
 * Super Mario 64 Bloopers: Thugger Hugger
 * Super Mario 64 Bloopers: 0% of Spaghetti
 * Join the Evil Side
 * Chinese Elves and Gay Cashiers
 * Super mario 64 bloopers: 99.5% crazy
 * Super Mario 64 Bloopers: ÐД gℓî†¢ђ
 * Super Mario 64 Bloopers: Ssenmodnar 4 (30,000 Soobs)
 * The Mystery of the Missing White and Blue (40,000 subs special)
 * 101 Ways for Mario to Die (The Right Way!) 50,000 Subs!
 * Super Mario 64 Bloopers: The Mario Parable
 * Mushroom wars: that space series?
 * Christmas 2013: The 12 Idiots of Christmas
 * Two Great Friends!
 * Super Pokeman 64: WELCOME TO POKEMANS!
 * 99% Beroken
 * Super Mario 64 Bloopers: Bad Stars
 * APRIL FOOLS
 * Super Pokeman 64: GYMS AND BADGES
 * SM64: Cooking with Bowser & Mario 2!
 * Super Mario 64 Bloopers: Spells n' Wiztards
 * SM64: Ssenmodnar 8 (150k Special)
 * SMG4 VS ALS Ice Bucket Challenge
 * Super Mario 64 Bloopers: Who let the Chomp out?
 * Mario in real life!? (200 vid special)
 * Super Mario 64 Bloopers: The Visitor. (2014)
 * Luigi Wants to Build a Snowman.
 * Super Mario 64 Bloopers: Problematic Pipe Problems
 * SM64: Meet the Steve
 * SM64 Christmas 2014: The Bowser That Stole Christmas.
 * SM64: The Retardness of 2014
 * SM64 Bloopers: Smexy Soccer
 * SM64: Ssenmodnar 10 (350k Apocalypse Special)
 * SM64: The SMG4 QNA (400k Subs :D)
 * SM64 Bloopers: The Pirate Plumbers
 * SM64: Meet the Luigi
 * Mario Simulator Interactive! (500k Subscribers)
 * SM64 Bloopers: Casino, Cards and Chaos
 * DerpTV: Super Happy Fun Fun Gameshow
 * SM64 Bloopers: Shy Guy Showdown
 * Super Pokemans 64: Legendary Pokemon
 * SM64: Ssenmodnar 0 - Release the Retardness!
 * Grand Theft Mario - If Mario was in... GTA V
 * SM64: Retarded Recap 2015
 * Mario In Real Life: Mario Monster Mash (700k Special!)
 * SM64 Bloopers: The Great Yoshi Race.
 * SM64 Bloopers: SnowTrapped
 * SMG4 N' Pals: Seaside Stupidity Part 1
 * DerpTV: Mushroom Kingdom's Got Talent
 * SM64 Bloopers: Super Cavemen Bros.
 * SM64: THE BOOTLEG DIMENSION
 * SM64: Mario gets a Nintendo Switch!

SMG4

 * SMG4: Welcome To The Kushroom Mingdom
 * SMG4: The Movie Audition
 * SMG4: Mario Gladiators
 * SMG4: Mario VS Steve
 * SMG4: The Mario Channel - Mario's Jackass
 * SMG4: Mario waits for pizza
 * SMG4: Luigi's Lesson
 * SMG4: Mario And... The Well
 * SMG4 Christmas 2018: The Most Important Thing
 * SMG4: Mario Gets Stuck On An Island
 * SMG4: Mario and the Anime Challenge
 * SMG4: Mario's Lemonade Stand
 * SMG4: The Japan Trip (opening advertisement only)
 * SMG4: The Mario Showdown
 * SMG4: A Day In The Life Of Everyone
 * SMG4: Mario vs IT

Ssenmodnar

 * Super Mario 64 Bloopers: Ssenmodnar 5 (WAT O O Edition)
 * SM64: Ssenmodnar 9 - Time Travel Edition
 * SSENMODNAR DELUXE - 1 MILLION SUB SPECIAL
 * 2 MILLION FAN COLLABERATION SPECIAL! (SSENMODNAR)
 * SMG4: 3 MILLION SUB FAN COLLABORATION!

War of the Fat Italians

 * War of the Fat Italians 2011
 * SM64: War of the Fat Italians 2014 (200k Special!)
 * SM64: War of the Fat Italians 2015 (600k Special)
 * SM64: War Of The Fat Italians 2016 (900k Special)
 * SMG4: War Of The Fat Italians 2019

Retarded64

 * Retarded64: A Dose of Dr. Mario
 * Retarded64: Mario for Hire.
 * R64: An Overdose of Dr. Mario
 * Retarded64: Boo Busters
 * Retarded64: Mario the Olympian
 * Retarded64: Stupid Mario Maker
 * Retarded64: Stupid Mario Kart

The Wacky Wario Bros.

 * The Wacky Wario Bros.: The Winning Ticket.
 * The Wacky Wario Bros.: Golfing for Gold
 * The Wacky Wario Bros.: Waluigi Origins

Guards N' Retards

 * Guards N' Retards: Prisoners
 * GnR Shorts: Job Hunting

TheAwesomeMario

 * A day in the life of Smg4
 * Mario The Plumber
 * Mario Gets A Pet
 * Boopkins and Bob in Casino Night

Trivia

 * The sprite is from an old man in Pokémon FireRed and LeafGreen. Here is the link.
 * SMG4 voiced Old Man Hobo on The 12 idiots of Christmas.
 * In the blooper "Two Great Friends!", it is revealed that the old man's name is Old Man Hobo.
 * There are in fact several Old Men, as seen in the videos "101 Ways For Mario To Die (The Right Way)" and "SMG4 VS ALS Ice Bucket Challenge", which speculates that only the one seen in Two Great Friends! is a hobo.
 * He's a rapist as shown in the videos "Two Great Friends!" and "Bad Stars".
 * He likes being in bathtubs.
 * In the blooper "The Mystery of the Missing White and Blue" he has a son named John which is Toad's father (as seen in "Ssenmodnar 6 (New Year's Edition)") and maybe Stacy's husband. So, the Old Man is probably Toad's grandfather.
 * He is possibly Mario's grandfather as shown in a flashback in SMG4: Mario Gets Stuck On An Island.