For trivia pertaining to this monster's Number, see Forum:"Numbers" Xyz Monster Trivia. Any contributions regarding this type of trivia should be placed there, instead of this page.
- This card is the "Number F" and anime counterpart to "Number S0: Utopic ZEXAL".
- Both monsters are Rank 0 Monster Cards, and are so far the only ones to be released in TCG/OCG.
- Both monsters can be Xyz Summoned by using Xyz monsters.
- Utopic Future requires 2 non-"Number" Xyz Monster, while "Utopic ZEXAL" require 3 Number Xyz Monsters or simply discarding a Rank-Up-Magic Normal Spell Card and using a Utopia Monster.
- This monster is the first Rank 0 Monster Card, and the first Xyz Monster which requires multiple Xyz Monsters as Xyz Materials for its Xyz Summon.
- This monster and its retrained counterpart "Number F0: Utopic Future - Future Slash" are the only "Number F" monsters.
- This is the only "Number" monster to not originate from either Astral World or Barian World.
- This is referenced by the fact this monster has the appearance of "Number C39: Utopia Ray V" fused with "Number 39: Utopia Beyond". "Utopia Ray V" is of Barian origin, as it was created through a Barian card, and "Utopia Beyond" is of Astral World origin, as it was created through an Astral card.
- This card is Yuma's successor for "Utopia", and unlike the other "Numbers", this card represents Yuma's own power, which he obtained without Astral. This is apparent considering that Astral did not absorb this "Number" at the series' conclusion.
- This card's appearance resembles Yuma himself, having a red-black-white-orange color scheme that matches his casual outfit, the collar of his jacket as part of its armor, and metal protrusions on its head resembling Yuma's hair.
- Yuma eventually fuses with this card for his last attack on Astral, which adds the Emperor's Key to this monster's body, atop the "0" on its chest.
- This card's ATK and effect may also represent Yuma, as he is said to not want to harm his enemies directly (thus having 0 ATK) but rather let them join his side (thus the effect that switches control of the opponents' monsters).
- This card can also references Yuma's name which contain the character for Horse, this card summoning chant mention this monster as a pegasus a winged horse and to this card's wings when it uses its effect or attack. Yuma last name, Tsukumo can be translated as ''Ninety-nine'' if you subtract both the nine's it becomes 0.
- While this card's "Number" was displayed as "00" during its Summon, it only appears as a single digit "0" on its body (at the center of its chest). This makes it, "Number S0: Utopic ZEXAL" and "Number F0: Utopic Future - Future Slash" the only "Number" monsters to have only a single digit on its body (all other single-digit "Number" monsters have been zero-padded so that they appear as "0X").
- This monster's appearance and its number is based on GNT-0000 00 Qan［T］ ELS Version with the swords, the wings, and the core in its chest.
- This card shares several traits with "Ultimaya Tzolkin", the first Level 0 Monster Card. They both have 0 ATK and DEF, and a condition that treats themselves as having a specific Level/Rank other than 0. Both monsters also appeared in the final battles of their respective series.
- Outside of these similarities, however, this monster is almost the exact opposite of "Ultimaya"; "Number F0" is a LIGHT Xyz Monster (black card frame), is treated as Rank 1 (the lowest Rank), and was used by an anime protagonist. "Ultimaya" is a DARK Synchro Monster (white card frame), is treated as Level 12 (the highest Level), and was used by a manga antagonist.