A very strange looking representative of the Nintendo Entertainment System, otherwise known as the Famicom. He made his debut in an 1987 commercial in Australia, where he and a few mascots of the games challenged the player by insisting that their games cannot be beaten. In Dreams, Mr SyS utilizes a few of the NES' accessories that were used to save video games from the infamous crash that happened in 1983, including the Power Glove and Zapper Light Gun.
The infamous "You Cannot Beat Us" commercial had a unique way of advertising the NES, by selling it based on the difficulty of the games themselves rather than anything else about it. Not to mention most of the hardest NES games tend to incap you with sluggish movement and extremely technical gameplay. True to this phenomenon, Mr SyS himself is a heavy character with extremely slow and floaty movement and is easily one of Dreams' most complex fighters on the roster. Despite these clear handicaps, Mr SyS is all about challenging players to beat him at his game by utilizing and manipulating his assists, traps, and zoning capabilities to punish opponents that hesistate and take advantage of their mistakes by piling on tons of damage at once. Be warned, those that master what SyS brings to the table are those that can seem to read everything in your mind and his gameplay heavily rewards complex setups with high bursts of damage and KO potential. He does tend to suffer from the usual downsides that heavyweights usually have however, like a big hurtbox and easy combo-bilitiy. Mr SyS does have some escape options in those scenarios, but those usually come at a cost. In short, Mr SyS is the most technical character in Dreams that specalizes in setups and puppeteering his minions to create a defense that you cannot beat.
You can fly around on your current platform and have a gunshot hit you via pressing A, damaging nearby opponents and you.