How to Recruit Spot - Dragon Quest 6
Spot is another one of the optional Slime Party Members that you can get to join your party in Dragon Quest VI. You can find Spot in the Castle Graceskull (Dream World) which can only be accessed after obtaining the Flying Carpet from Sorceria later on in the game.
Note: He is not available in the SNES (original release) of the game; only in the DS and Mobile remakes are you able to recruit him to your party.
In order to reach Castle Graceskull (Dream World) you'll need to first reach it in the Real World. Sail your ship in the Real World to the southwestern most landmass and dock it nearby one of the forests. From here you will be able to run over to the open part of land and use your Flying Carpet to travel across the water and to Castle Graceskull. We visit Castle Graceskull during Chapter 9 of my Walkthrough.
Once inside of Castle Graceskull (Real World) you will want to inspect the well outside of the castle on the left. This will teleport you to the Dream World which is where you can find Spot in the eastern side of the area. All you need to do is speak to Spot and agree to let him join your party.
Note: Once you finish the story events in Castle Graceskull you can still return here and recruit Spot as well as collect any items you may have missed previously. After watching the castle get attacked and many residents killed you'd assume you wouldn't be able to come back here but you can, I have tested it and can confirm that's the case.
Vocation Permanent Rewards
These are the passive & permanent rewards that you will get when mastering a Vocation. You'll keep these boosts even when switching to a different Vocation. Once you reach level 5 in every Vocation you'll receive a Gospel Ring from the priest in Alltrades Abbey as well which will allow you to avoid encounters. You do not need to reach level 5 in every Vocation on 1 character, it can be done on multiple characters.
Gladiator: +20 Strength
Armamentalist: +20 MP
Paladin: +20 HP
Sage: +20 MP
Ranger: +20 Agility
Luminary: +15 Style (or 20)
Hero: +40 MP
Dragon: +20 Strength
Liquid Metal Slime: +100 HP