And mainly her true form (2 last) (2 first are as before, but just revealing the names of boots)

Silent "Avatar-On!" -> Skate Shoes

Security Guard Silent -> Safeguard Roller Sneakers

Silent "Player-On!" -> Onset Shoes
(Changed: Now they are similar to Shadow's Air Shoes.
Before, they were a regular Rollerblades as Security Guard Silent has)

Soldier Grandeur Silent -> Splendor Gravity Sneakers
(Changed: They were as Air Shoes, but now they are even superior)
As the name suggest, a nice trick can be made...

Moving upside down?

Fun Fact: Each version of Silent is representative not only in FanComic, but also in every Fierce Forces FanGame.

Originally:

Silent "Avatar-On!"
The Start of Adventure before Fierce Forces and creating the Avatar in Virtual Reality.
Traveling on South Island and gathering the Night Guards from pizzerias in
Five Nights at Sonic's: Insane Immerse "Route of Recollect" Addon FanComic
and in Nocturnal Frights at Sonic's: Fierce Forces "Hush! & Hustle!" FanGame.

Security Guard Silent
An upgraded version from "Avatar-On!" (Lost Kid) just before entering
Fierce Forces Arcade Machine in Dr. Golden's Prep Mean Haze Citadel on Angel Island, then begins Five Nights at Sonic's: Fierce Forces "Imagine It!" Main FanComic
and in Fever Daybreaks at Sonic's: Fierce Forces "Aureate Afterglow!!" FanGame.

Silent "Player-On!"
The True Form and playing as her cybernetic version "Avatar-On!" in
Five Nights at Sonic's: Insane Immerse "Route of Recollect" Addon FanComic and
later appearing in Five Nights at Sonic's: Fierce Forces "Imagine It!" Main FanComic and in Five Nights at Sonic's: Fierce Forces "Entertain Entrapment!?" FanGame.

Soldier Grandeur Silent
An upgraded version from "Player-On!" (Wandering Kid)
by buying the uniform in Floral Lefty Sonic's "Rosace-Up!" Shop in
Five Nights at Sonic's: Fierce Forces "Imagine It!" Main FanComic
and in Five Nights at Sonic's: Fierce Forces "Stellar Showoff!" FanGame.