Enzo

He eventually decided to throw another party to make up for the last one and invited Mario and company. He also threatened to kill anyone who tried to leave. After a few games, they decided to play hide-and-seek, but Enzo changed the rules so he could brutally kill anyone he encountered. He managed to find Mario trying to escape through the basement.

Initially, Enzo was a friendly and kind person to many others, on whose support SMG4 could rely. Although, as was shown, he couldn't help but laugh, mocking SMG4 for wearing pink gloves.

However, after Mario accidentally ruined his birthday, Enzo became an extremely angry and short-tempered person, who directed all his hatred and rage at the plumber, even going so far as to try to force SMG3 to kill Mario, but to no avail.

SMG3's failure to kill Mario, coupled with Enzo's anger, ultimately led to his breakdown and transformation into a complete psychopath who wants to kill not only Mario but anyone connected to him. This includes even SMG4, who was simply trying to help him, as well as Luigi, Peach, and even Toad, who weren't even involved in Mario's party-busting.

He was SMG4's friend who lived in the castle before turning evil after Mario ruined his birthday. After Mario accidentally ruined his birthday party, Enzo became an extremely angry and short-tempered person who focused all his hatred and rage on the plumber, to the point where he tried to force SMG3 to kill Mario, but failed. This led to him breaking down and becoming a real psychopath. Enzo was once a friend of SMG4, first appearing in the episode "Imposter," where he would go on to appear in many other dubs, particularly as cameos. In "Birthday Freakout," he celebrated his birthday with SMG4, trying to keep Mario out. After Mario ruined the party by dancing for five seconds and accidentally dropping Steve's lit candle on the carpet (according to SMG4), Enzo became furious with the plumber for ruining the best day of his life and hired SMG4's nemesis, SMG3, to kill him, but the latter continually failed, much to Enzo's dismay.

Enzo wears blue overalls and a blue sweater, brown boots, white gloves, a blue cap, he has blue eyes, a mustache, and brown hair.