Here is a list of all who makes a cameo appearance in Smash Fighters Z, whether it be early cameos, cameos from other characters in the represented franchises, or characters/items from other franchises.
Mecha Sonic Saga
- Junior Shrooboid is seen still in preserve in E.Gadd's Lab.
- Weegee, Waluigi and Shadow Clone Luigi appear as Luigi's reflections in a series of mirrors in the Mirror World.
- Lord Crump is seen sunbathing on a beach on Yoshi's Island. He later recalls the events that transpired here in "The Shadow of Sir Grodus".
- A Cardboard Box (Metal Gear Solid) is seen amongst cargo in the Halberd.
- Jeff and Hal, from the flash show Bowser's Kingdom, are attacked at the same time by King Dedede during the Invasion of Bowser's Castle. They are very noticable for having largely different sprites to the other soldiers.
- Super Mario-Kun appears on several advertisement posters.
- The Pong paddles and ball are etched onto a wall in Bowser's Castle.
- During the Metallix Tournament, a number of cameos are seen amongst spectators. This includes:
- Earthworm Jim
- Sparkster (Rocket Knight)
- Shovel Knight
- Goku (Dragon Ball)
- Crash Bandicoot
- Sonic Blast Man
- Tim Allen
- Link (The Legend of Zelda)
- Samus Aran (Metroid)
- Darth Vader (Star Wars)
- Mickey Mouse (Disney)
- Aladdin (Disney's Aladdin)
- Po (Kung Fu Panda)
- The Guy (Disturbed)
- The Duck Hunt Dog is seen standing behind a bush during the battle in the Minus World, holding a duck.
- An exploding Bidoof (Pokémon) frequently appears.
- On Eggman's computer, as he imputs the passcode for the Bowser Cannon, a trio of icons are seen.
- Mozilla Firefox
- Michael Rosen
- A lucky 7.
- A poster of James Bond is seen in the background in Eggman's quarters.
- Wally Bear (Wally Bear and the NO Gang) appears skating around Rougeport before Dark Matter arrives.
- One of the Bowser portraits Kamek passes in Bowser's Castle depicts Tim Allen from Home Improvement instead of Bowser. It catches his attention for a moment, but he carries on, thinking it as nothing. These portraits appear again when the heroes walk through the same room.
- A Ringosuki appears in Smithy's Factory, where it idly stands on a conveyor belt leading to a crusher.
- Magolor's Japanese name, "Mahoroa" is a special password Eggman uses.
- Symbols depicting Solrock and Lunatone appear on walls at the entrance of the Pit of 100 Trials.
- Amongst King Boo's portrait victims, one can find the following:
- Alex Kidd
- Black Mage (Final Fantasy)
- Shield Knight (Shovel Knight)
- Elder Princess Shroob and Queen Jaydes appear in the background during one of Fawful's flashbacks. Jaydes herself later appears in person.
- King Boo attempts to scare Shadow by showing him an image of a deformed version of Sonic, but it doesn't work. This image is of the creepy Sonic caricature from Sonic CD.
- The Yoshi Theatre appears to be showing a number of different movies, as seen by hung posters. This includes:
- Bartok the Magnificent
- Dragon Ball Z: Cooler's Revenge
- Pokémon: The First Movie
- Super Mario Bros.: The Movie
- Disney's Aladdin
- The Room
- Ecco the Dolphin is seen leaping out of the water momentarily whilst the heroes are visiting Oho Oasis.
- Woohoo Hooniversity cameos:
- Professor E.Gadd poster
- Dr. Crygor poster
- Dr. Arewo Stein poster
- Dr. Gero (Dragon Ball) poster
- Omnidroid blueprints (The Incredibles)
- Porygon (Pokémon)
- Baby Metroid from (Super Metroid)
- There is a Princess Unikitty (The LEGO Movie) poster in Princess Peach's room.
- A postcard depicting Francis appears on a table in Princess Peach's room.
- Pac-Man is pursued by the Ghosts Blinky, Pinky, Inky and Clyde when the Halberd makes a hyperspace jump.
- In a reference to Family Guy: Blue Harvest, a part of the opening sequence to Doctor Who during a hyperspace jump.
- Kabula appears amongst Bowser's fleet. It is amongst those critically damaged by Smithy's flex of power.
- Crash Bandicoot is amongst the Knothole civilians during the Death Egg's launch and the subsequent attack on Knothole.
- Olimar's ship (Pikmin 2) is amongst the trash in the Spacejunk Galaxy.
- A Mettaton (Undertale) statue appears in Wizpig's dance studio, when he "fights" Mario.
- TIE Fighters (Star Wars) appear to combat the Battleship Super Halberd's M-Wings after they attempt to replicate the famous "Trench Run". They are manned by "Stormkoopas".
- These TIE Fighters return during the Super Bowser Saga, notably amongst the ships serving Doctor Noah.
- Yooka and Laylee are seen wandering in a forest prior to the fight between Mario and Banjo.
- Several unusual objects are found neatly alligned om several podiums in the corridor leading to Haltmann's office. This includes:
- Master Ball (Pokémon)
- The Kragle (The LEGO Movie)
- Companion Cube (Portal)
- The corridor itself is based on a chamber filled with non-Lego objects from The LEGO Movie.
- N.Trance and Nitros Oxide (Crash Bandicoot) are amongst the brokers watching Mad Scienstein's broadcast.
Pir'oth Ix Saga
- Äs Nott repeats King Boo's illusory trick by showing Sally an image of the deformed Sonic from Sonic CD. However, unlike before, he plagues her with various deformed images of Sonic.
- Amongst these images is the infamous "Sanic Hegehog" drawing.
- This is similar to the trick Äs used against Sonic himself earlier, where he shows him an image of a zombified and later skeletal Sally.
Super Shadow Queen Saga
- Statues depicting Lunatone and Solrock are seen within the Palace of Shadow.