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This is an alternate version of the "True Vision" Ending called:
"SAVED Friends" in FNaS: Fiercy Forces "Imagine It!".

"The Player" Silent the Wild Lynx, has succeeded in her Mission of Freeing:

Luigi "Superstellar" (FNaS 4: Mergedverse World and FNaS: Fiercy Forces "II!")
from his "Neverending Nightmare", known by trapped in the Arcade Machine back then in Maniac Mania as Luigi and later changed in Fiercy Forces as a lure.
(In case here, in different dimension Maniac Mania).

Firstly by Dr. Golden (Maniac Mania), then by his changed appearance:
Dr. Golden "Preparation" (Fiercy Forces), that did the same thing to lure Silent
"The Avatar" inside to Fiercy Forces Arcade Machine to prevent hers escape route.
Dr. Golden/Dr.Golden "Preparation" Ice Popsicle symbolizes the Evil made on Luigi in Maniac Mania and on Silent "The Player" in Fiercy Forces.

Silent's Second Mission was to set free Origin Sonic "Midday" (FNaS 5: Fiercy Forces) as a way to stop Dr. Golden "Preparation".
Classic Dr. Eggman "Scheme" Ice Popsicle and Origin Sonic "Midday" symbolizes the Bite of '91 and The Beginning.

While freeing Origin Sonic "Midday" (He as The Beginning) means changing his fate, thus Dr. Golden "Preparation" (He as The Ending) is defeated and imprisoned in his own Castle on Angel Island.

Silent (Sonic Forces "Different Dimension" and FNaS: Fiercy Forces "II!") with Clone Sonic "Tune-Up!" Ice Popsicle symbolizes the strong bond between "The Player" = Silent and "The Game" = Clone Sonic "Tune-Up!" (FNaS 1: Fiercy Forces and FNaS: Fiercy Forces "II!"), even that they are on opposite sides.
(Silent = The Night Resistance - Clone Sonic "Tune-Up!" = The Evil Empire)
This also symbolize, that "The Game" can't play on its own/exist without the player... while "The Player" wants just to have some entertainment time with the favorite game.

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It's confirmed that they were first Rescued and then taken by Silent "The Player" on her adventure:

Modern Sonic "Reversion" (FNaS 3: Mergedverse World) symbolizes and refers to the Good Ending in FNaS 3.

Classic Sonic "Genesis" (FNaS 5: Mergedverse World) symbolizes the whole Real Beginning in FNaS 5, that has started thanks to Sonic (with help of Tails).
Origin Sonic is Classic Sonic's clone.

Shadow "Rely" (Sonic Forces "Different Dimension") symbolizes solitude, that has found a new path of light, thanks to "The Player's" help.
In Fiercy Forces he was also imprisoned by Memorial Infinite. Just like before in Sonic Forces in virtual reality by Infinite. (That's a spoiler alert btw)

Modern Sonic "Reversion", Classic Sonic "Genesis" and Shadow "Rely" symbolize the Trio Hedgehogs, that were the playable Characters in Sonic Forces, alongside with Avatar.

I hope that's it. Thanks for attention!

Also the ending is a reference to "Princess Quest" Ending from FNaF Security Breach: