The twelfth season of SML Movies began airing January 2, 2020.
- Logan Thirtyacre as Mario and Bowser Junior
- Lance Thirtyacre as Luigi, Jeffy, Jackie Chu, Goodman, Richard Goodman, Benjamin Goodman, Black Yoshi, Felipe, and Shrek
- Lovell Stanton as Chef Pee Pee, Bowser, Joseph, Charleyyy, and Toad
- Chris Netherton as Cody, Brooklyn T Guy, and Judy
- Elaina Keyes as Rosalina, Karen and Elizabeth
- Matthew Reber as Scooter
Season 12 will most likely be the first season entirely in SuperBowserLogan, assuming he may switch channels again. The season starts with five videos about all five of the main characters: Bowser Junior with Bowser Junior Gets a Job!, Jeffy with Detective Jeffy!, Black Yoshi with Black Yoshi's SuperPowers!, Joseph in The Imaginary Girlfriend and Cody (and Ken) in ChicKEN! giving them all a fair share of spotlight. Also, it was revealed that Logan and Chilly are officially broken up for various reasons. Chilly and her family left the SML Crew as a result and Logan now has a new love-interest. Chilly also had a new love interest named Roy, who was made fun of in "The School Dance!", but she moved on from him too and has a new love interest named Marc. Another big change is Joseph breaking his green shell in Joseph's New Shell! and getting a new red one with wings, a change that Logan confirmed would be permanent. This season also introduces the Rosalina puppet (due to Elaina's return as Logan is no longer with Chilly) along with a human Bully Bill puppet which resembles and references Buford from Phineas and Ferb. It is the first season filmed during the Cough-Cough and Chris Netherton decided that he would not film with them to protect the health of his parents. However, in The Baseball Game!, he temporarily came back, but wore a face mask while recording, resulting in the characters he plays, such as Cody, Brooklyn Guy, and Judy, sounding slightly muffled. Jeffy, Mario, and Rosalina head to Disney World for the first time ever in Jeffy Goes To Disney World, and in Jeffy and Junior’s BIG Heist!, Jeffy and Junior meet Charleyyy for the first time. In this season, most likely because of the divorce between Logan and Chilly, videos started to feel less rushed and/or pandering to their audience. Also, the channel's cash cow, Jeffy, was noticeably less overused in videos, much to the fans' pleasure. This season is also known for classic characters like Tony, Shrek, and Toad returning as either cameos or temporary appearances. However in this season, Mario has become selfish, cruel and greedy because of how he loves money. Due to this Logan used more less used characters such as Scooter, Richard, and Benjamin. This season also introduces a new Feebee puppet & a Jeffy the Rapper puppet coming to the SML merch store. In Jeffy Wins The Lottery! and Goodman's Son Gets a Job! Rosalina and Mario must take Jeffy to Jimmy John's for a happy meal and Richard must work at Jimmy John's because McDonalds is closed due to it being under quarantine like all other businesses in the whole world. Coming up to the SuperBowserLogan channel is SuperMarioLogan in Central New York where ten SuperMarioLogan characters spend three weeks inside the Comfort Inn & Suites Airport hotel in 6701 Buckley Rd, Syracuse NY and it's first SuperMarioLogan in Central New York video is Shopping at Green Hills Farms.
|487||Bowser Junior Gets a Job!||January 2, 2020||Bowser Junior gets a job!|
|488||Detective Jeffy!||January 10, 2020||Jeffy has to save Mario!|
|489||Black Yoshi's SuperPowers!||January 15, 2020||Black Yoshi gets SuperPowers!|
|490||The Imaginary Girlfriend!||January 20, 2020||Joseph gets an imaginary girlfriend!|
|491||Chicken!||January 24, 2020||Ken gets turned into a chicken!|
|492||Jeffy and Junior Skip School!||January 30, 2020||Jeffy and Junior want to go mini golf!|
|493||Jeffy's New Dad!||February 6, 2020||Mario has to change to be Jeffy's dad!|
|494||The School Dance!||February 16, 2020||Junior and his friends are going to the school dance!|
|495||Baby Jeffy!||February 25, 2020||Jeffy is a baby!|
|496||The Time Machine!||March 1, 2020||Cody makes a time machine!|
|497||Jeffy's Lie!||March 10, 2020||Jeffy tells a hug lie!|
|498||Bowser Junior's Stinky Friend!||March 15, 2020||Junior finds a new friend!|
|499||Jeffy Goes To Disney World!||March 22, 2020||Jeffy goes to Disney World!|
|500||Jeffy Goes Bowling!||March 28, 2020||Jeffy enters a bowling tournament!|
|501||Jeffy's Online School!||April 3, 2020||Jeffy has to do school online!|
|502||Black Yoshi's Big Bamboozle!||April 7, 2020||Black Yoshi bamboozles everyone!|
|503||Bowser Junior's SICK Pool Party!||April 10, 2020||Bowser Junior wants to have a pool party!|
|504||Jeffy's Pet Tiger!||April 15, 2020||Jeffy gets a pet tiger!|
|505||Bowser's Change!||April 19, 2020||Bowser needs his change!|
|506||Joseph's New Shell!||April 23, 2020||Joseph gets a new shell!|
|507||Jeffy Gets Stuck!||April 29, 2020||Jeffy gets stuck under a tree!|
|508||Goodman's Son Gets a Job!||May 2, 2020||Mr. Goodman is making his son get a job so that he can learn the value of money!|
|509||Jeffy's New Friend!||May 6, 2020||Jeffy has to be friends with someone he does not like!|
|510||Bowser Junior's Wings!||May 9, 2020||Bowser Junior gets wings!|
|511||Jeffy's Scooter!||May 13, 2020||Jeffy wants a scooter!!|
|512||Bowser Junior The Babysitter!||May 16, 2020||Bowser Junior babysits!|
|513||Jeffy and Junior's Big Heist!||May 20, 2020||Jeffy and Junior have to get Charleyyy's autograph!|
|514||Bowser Junior's Girlfriend Problem!||May 23, 2020||Bowser Junior gets a girlfriend!|
|515||Scooter the Rapper!||May 27, 2020||Scooter becomes a rapper!|
|516||Jeffy's Car Accident!||May 30, 2020||Jeffy gets into a car accident!|
|517||Bowser Junior's Rat Problem!||June 3, 2020||Bowser Junior wants to help this rat!|
|518||The Baseball Game!||June 6, 2020||All of the SML characters play baseball!|
|519||Bowser Junior's House Party!||June 11, 2020||Bowser Junior throws a party!|
|520||Jeffy's Scary Movie!||June 15, 2020||Jeffy watches a scary movie!|
|521||Mario Sells Jeffy!||June 19, 2020||Mario sells Jeffy to Mr. Goodman.|
|522||Scooter's Birthday!||June 23, 2020||It is Scooter's birthday!|
|523||Bowser Junior's Prank Gone Wrong!||June 27, 2020||Bowser Junior's prank goes wrong!|
|524||Jeffy and Junior Sneak Out!||July 3, 2020||Jeffy and Junior sneak to the park!|
|525||Jeffy Wins The Lottery!||July 8, 2020||Jeffy wins the lottery!|
|526||The Redo Button!||July 12, 2020||Bowser Junior has a redo button!|
|527||Scooter's Parents!||July 15, 2020||Scooter doesn't have parents!|
|528||Jeffy's Future!||July 18, 2020||Jeffy sees his future!|
|529||Joseph's Imaginary Family!||July 23, 2020||Joseph gets a family! Kinda|
|530||Bowser Junior's Big Discovery!||July 26, 2020||Bowser Junior makes a huge discovery!|
|531||Jeffy's Big Mess!||July 30, 2020||Jeffy makes a huge mess and Mario gets payback!|
|532||Say Cheese and Bye!||August 5, 2020||Bowser Junior finds a camera in the attic!|
- Mario (Plush/Puppet)
- Rosalina (Plush/Puppet)
- Black Yoshi
- Bowser (Koopa/Human)
- Bowser Jr. (Koopa/Human)
- Cody (Koopa/Human)
- Joseph (Koopa/Human)
- Chef Pee Pee
- Brooklyn T. Guy
- Jackie Chu
- Richard Goodman
- Benjamin Franklin Goodman
- Bully Bill (Bullet/Human)
- King Strongbottom
- Vladimir Smirnov
- Tony the Tiger (Speaking Cameo)
- Craig the Devil
- Tom Brady
Expected/Likely to Appear
- Loan Dolphin
- Donald Rodriguez
- Harold Wilfred
- Dr. Fredrick Finklesheetz
Possible to Appear
- Godzilla (thumbnail; animations)
- Firefighters 1/2/3 (animations)
- Bird Killer
- Patrick's Step-Mom (one-time)
- Paige (one-time)
- CoolPants Twins (one-time)
- CJ CoolPants (one-time)
- Ping and Pong
- Maria Sanchez
- Roy Gethard
- Cameel Habib Habab
- Ding and Dong
- Templeton The Rat
- Dr. Wong
Videos that are likely to be seen in this season.
- Jeffy's 16th Birthday
- Bowser Junior's 12th Birthday
- Halloween Special
- Christmas Special
Confirmed/Hinted in Vlogs
- Jeffy Pool Video (featuring a giant beach ball, Junior, and Joseph)
- Jeffy's Swimming Lessons
- Jeffy the Rapper 3
- Goodman's Yacht
- Jeffy Goes Skating
- Jeffy the Prankster
- The Life Of Mr. Goodman
- Feebee Video
- Superhero Video
- Jeffy The Frog
- Thanksgiving Special
- Pokemon Series continuation
- Bowser Junior's Playtime 7
- Bowser Junior's Game Night 8
- Joseph's 12th Birthday
|WHAT IS IT?!|
|Happy Birthday||Jeffy||Jeffy's Big Mess!|
|E-I-E-I-O||Chef Pee Pee||Bowser Junior's Big Discovery!|
|Frère Jacques||Jeffy||Jeffy's Scooter!|
- This is the first SML season of the 2020's and the second season to be released on a leap year, first being Season 8.
- The Pokémon series may receive a release or get redone entirely according to Logan.
- After the final SuperMarioLogan in Central New York, the SuperMarioLogan's own version of Worth It from fifth harmony is heard in the end credits and is performed by Matthew, Logan, and Lance. The SuperMarioLogan in Central New York series has references from The Wiggles.
- Coincidentally, both Season 11 and Season 12 start with a video specifically about Cody and Junior without Joseph.
- Logan has used the human puppets a lot less often and is using the standard Mario characters.
- The Mario puppet was used in Jeffy's New Dad!, but the switch isn't permanent according to Logan.
- The Junior and friends puppets returned in The School Dance! but it was likely to advertise the last day of the puppet sales.
- According to Dabhdude, Logan has a contract where he must do one puppet video per month.
- February and June were the only months to have a video that features the new puppets despite this contract Logan has.
- Jeffy's New Friend! also had featured the puppets, which was primarily done to promote the newly made puppets of Rosalina and Bully Bill.
- The Rosalina and Bully Bill puppets were limited edition items that are no longer available.
- This season will mark Mario and Rosalina's 5th anniversary.
- This is the first season to be released after Logan and Chilly's divorce (break-up).
- This season included the 500th episode
- This season marks Elaina's full return to the series. The reason she wasn't appearing in most of April was due to living in another state but returned in Jeffy Gets Stuck! before returning home again.
- During most of the season, Brooklyn Guy, Cody, and Judy appeared in a FaceTime call. This is because Pablo has to FaceTime his scenes due to the pandemic and Pablo not wanting to risk going to Logan's house to infect him or his parents.
- Because of this, Harry was eventually introduced to serve as a replacement for Cody.
- In Lances BTS for Bowser Junior the Babysitter!, SML introduced two new puppets: Jeffy the Rapper and Feebee.
- So far, this season's longest episode is Bowser Junior's Stinky Friend!
- This episode has a runtime of 17 minutes and 41 seconds.
- This episode has a runtime of 17 minutes and 41 seconds.