History DiscOneNuke / ShinMegamiTensei

* The original ''VideoGame/ShinMegamiTensei'' plays around with this trope a bit. Early on, you can create a unique, high-level Cerberus by fusing your pet dog with a demon, in one of the precious few exceptions to the rule where you cannot create or recruit a demon of a higher level than yourself. This lets you plow your way through many of the game's early enemies. About halfway through the game's first act, however, it leaves your party. After you and your comrades are teleported to the demon world just before the nukes fall, you get a chance to reunite with the very same Cerberus, which also makes him a Disc Two Nuke.

** Tornado is learned at level 17 from the Hifumi Magatama. It deals heavy Force damage, and is earned extremely early for the level of power it dishes out.

** Swift Strike is available as early as level 19 for Joker, but causing a guaranteed 3-4 light hits to all foes is a lot more powerful that it sounds. Don't be surprised if you find yourself keeping this skill on most new Persona you upgrade from.

** Fusing the right 3 Persona (Pixie and Nekomata then the result with an angel) early on can give you a Lilim with the 4 main elements[[note]]In this game, hitting an enemies weakness gives you an extra turn once per round[[/note]] by level 8. This lasts more than long enough for the next quad elemental persona (Pale Raider) which lasts till the right skills are accessible for specialists.
** A similar recipe exists to create a 4-element Yomotsu Shikome a Lv. 9 Hermit persona. It's slightly better than Lilim because Shikome has no weakness and is resistant to Darkness/Mudo.
* You can do a similar trick in ''VideoGame/{{Persona 4}}''. NewGamePlus lets you carry over your money and any registered personas. As soon as the compendium is available, you can just buy a high-powered persona such as Ardha, Lucifer, Satan, Metatron, Yoshitsune, etc. and bulldoze through dungeons in at least one day.

** Even before that, if you bought the DLC, The first two fiends could trivialize the first two major bosses easily. Matador is immune to wind and dodges like mad, making Nuwa waste tons of press turns while wreaking havoc on her lower defenses. Daisoujou's components provide immunity to fire and he naturally learns Mahama, which hits Lahmu and all of his appendages on their light weakness and he doesn't care how powerful his opponents spells are, as he can tank them and heal off the damage while hurting Lahmu at the same time. Fitting that the aspects of death can murder the most powerful of demons.

* A general [=MegaTen=] example: [[UselessUsefulSpell Petrify and Charm]]. No, seriously. Charm can be obtained ''very'' early in pretty much every game, and doubles as one of the best ways to deal with bad ElementalRockPaperScissors matchups you're bound to have, a way to deal with GoddamnedBats and a way to keep your party healed with low cost and, though rare, can also works on minor bosses. Petrify, on the other hand, kills pretty much everything non-boss, barring some rare occasions, with surprisingly high accuracy, even though it takes longer to get.

* Early on in ''VideoGame/ShinMegamiTenseiIIINocturne'' the Demi-fiend can learn the spell "Fog Breath" from one of his starting Magatamas. It's two castings of Sukunda (lowers accuracy and evasion) ''in one''. Despite the MP cost it will save your life, as enemies will lose turns if their attacks miss. It continues to be useful all the way until Demi-fiend and his familiars can learn Debilitate.
** Focus also qualifies, being learnt as early as level 23. It's a cheap spell that amplifies the user's next physical attack by over 2 times. It ''never'' leaves the skill set of physical builds, especially for those going for the True Demon ending where they also attain Pierce to bypass most physical resistances.

** Shiki-Ouji is a level 21 Persona that Nulls Phys/Gun/Curse skills, an absurd level of resistance for that early in the game. Given the amount of Phys skills alone you come across, Shiki-Ouji more than makes up for his level in sheer usefulness right out the gate.

* The first ''VideoGame/{{Persona}}'' has Phaleg, a level 18 Persona that nullifies ''magic'' and has a powerful attack spell and Mediarama (the first Persona to have it; the rest are at level 29 and up). Not only is it absurdly easy to obtain, you can fuse it at a point where it can literally one-hit just about anything, and it remains useful even in the endgame due to its low SP cost.

** As expected by their DownloadableContent status, the Legacy Personas (Orpheus, Izanagi, Thanatos, Kaguya, Magatsu Izanagi, Messiah, Ariadne, Tsukiyomi, Asterius) are overpowered for how early you get them in the game -- you absolutely destroy the < level 10 enemies with the level 20-'''81''' Personas, even on Hard or Merciless difficulty. What really drives them into this territory however isn't just their strength, it's that the ''first'' summoning of any of them (even the lvl 80 personas) is entirely ''FREE'' of charge. Any summons after this should you use them in a fusion must be paid for of course, but still a free courtesy summon is insane to ignore.

** You can also do the same thing in ''VideoGame/ShinMegamiTenseiIVApocalypse'', but only this time, Cherub isn't the strongest Divine demon. It's actually because there are two versions of Angel in this game, which are both the weakest and the strongest of the Divine demons of this game. The stronger Angel has access the Judgment Light, Luster Candy and Mediarahan.