Super Mario 64 Bloopers: SMG4 VS SMG3 is the seventh episode of Season 2 and the fifty-fifth overall to be uploaded by SMG4.
SMG3 begins replicating SMG4's bloopers to become famous on YouTube. Mario, SMG4, and their new friends must thwart this evil scheme.
The episode starts off with Mario spending 2 hours browsing the internet staring at images of spaghetti. Afterward, he started to consider watching SMG4 bloopers, he began watching a video created by loluser1324. Meanwhile, SMG4 using the Wing Cap was flying around Rainbow Ride until he crashes into a building falling into Peach's Castle, he's heading back to his room seeing Mario watching machinist SM64 bloopers until he realizes Mario's watching a video which presumably seems to be made by SMG4. They quickly notice the author of the video was SMG3. They try to call a RMKP, but to no avail. They send an e-mail to YouTube but failed. They got a note from MCGustavo who helps them find SMG3. They arrive at the roof where SMG3 greets them. After a quick confrontation, SMG4 threatens to tell on SMG3, only for the latter to pull a gun on him. He thinks about killing MarioMario54321 next. Upon hearing this, FM arrives to beat him up. The gang cheers for FM as SMG3 jeers at the gang. SMG3 tries to escape, only for MCG to throw a paper at him, causing SMG3 to have a paper-cut. The gang all leave as SMG3 tries to remind them about his paper-cut but to no avail.
- At 2:39, SMG4's text is red instead of blue.
- The part where Mario calls SMG3 a boob guy is a reference to How Mario was Born due to the fact that the boss called Baby Mario boob guy.
- X's ripoff in SMG3's video is called Y. This is a way to mock the alphabetical letter as a simple name.
- This episode depicts SMG3 as a ordinary guy who ripped off SMG4's name and color code in an attempt to be more popular. SMG4: Mario's Spicy Day 🔥 and SMG4: SMG4's Origins retcons this: the former episode shows that SMG3 stole SMG4's video ideas because he was jealous of his popularity in meme school and the latter episode reveals that he has always been SMG3 ever since birth.