For detailed information about the series, see: Dragon Quest Wiki.
Dragon Quest is a popular Japanese Role Playing Game (JRPG) which was originally made by Eidos Software until it merged with Square Enix.
It is not that popular in America, but in Japan it is a hit series with many characters such as the Slime, Erdrick, Estark, and Zoma being very well known video game icons.
The Power of this Verse
Dragon Quest is quite powerful, with its first trilogy reaching the limits of 6-A, and the Zenithian Saga reaching universal levels with their top tiers, and DQVII-IX all reach tier 5 levels. In terms of hax it has spells that negate transformations, powerups and summons. A spell that reflects all spells. And spells that heal and revive.
Dragon Quest is severely lacking in speed though, only reaching massively hypersonic speeds
Prince of Middenhall
Dragon Quest VII and onward