Mario is a larger than a usual Minifigure and features electronic functionality: his eyes, mouth, and chest all light up in different manners according to his reaction. The figurine includes a scanner that allows the figure to react to specialized tiles included in the Super Mario sets, and react to bricks depending on their colours. Mario will treat red bricks as lava and react in a painful manner, and treat purple ones (Soda Jungle) as poisonous and react in a sickened manner, for example. Mario can also react to motions alone: shaking him, for instance, will provoke a dizzy reaction. He will also yelp ‘mamma mia’ if somebody pulls off his overalls.
When Mario interacts with certain action tiles, he generates virtual coins, the total of which becomes visible on his chest after he finishes a level. When he interacts with a Warp pipe’s action tile, he triggers a time limit and Mario has to generate as many coins as possible before finishing the level. The maximum number of coins that Mario can generate before finishing is 999, but this is almost impossible to achieve without playing on a deliberately unbalanced course.
Mario’s appearance and abilities can be customized through Power-Up Packs, such as 71370 Fire Mario Power-Up Pack, 71371 Propeller Mario Power-Up Pack, 71372 Cat Mario Power-Up Pack, 71373 Builder Mario Power-Up Pack, 71384 Penguin Mario Power-Up Pack, and 71385 Tanooki Mario Power-Up Pack.
- He is the first minifigure with a talking feature, and is voiced by Charles Martinet.
- Mario's hat (along with other references to the franchise) previously appeared in LEGO City Undercover in 2013.
- In the Japanese dub of the Super Mario Bros. movie, he was voiced by the late Kosei Tomita, who also voiced King George II and The Penguin.
- There are a few reports of early Mario models suffering graphical glitches and an inability to collect coins after updating them through the current, official LEGO Super Mario application.