dungeons-and-dragonsloremonsters
In D&D 4th Edition (the edition I play), Bullywugs are featured in the Monster Manual 2. However, the lore about them in this book is very thin, barely touching n anything about the race itself.
Where can I find more information on the lore of these creatures? The source could be for any edition because I'm not looking for stats.
You'll have to work with your DM, and perhaps consider a Warforged character.
There is no Player Character Class in the Players Handbook with the description of animated armor you called out, but the Warforged seem similar. During your discussion with your DM, explore how a Warforged character might fit your idea. This race is for the Ebberon setting, and is ported in from earlier editions of D&D (3.5e). Now that the Eberron: Rising From the Last War is published, it may fit better.
Warforged Traits {Germane to the question; other traits snipped for brevity}
Ability Score Increase. Your Constitution score increases by 2, and one other ability score of your choice increases by 1.
Constructed Resilience.
You have advantage on saving throws against being poisoned, and you have resistance to poison damage.
You don’t need to eat, drink, or breathe.
You are immune to disease.
You don’t need to sleep, and magic can’t put you to sleep.
Integrated Protection. Your body has built-in defensive layers, which can be enhanced with armor:
You gain a +1 bonus to Armor Class.
This gives you a point of departure in your discussion with your DM, and could apply to any class in the Players Handbook. Keeping it a secret might not be possible, if you take that option.
Since you may be referring to a construct from the Monster Manual, Animated Object, (p. 19-20 of MM; p. 9 Basic Rules, DM) then you need to proceed as follows:
Discuss this in detail with your DM, since you wish to create a monster as a playable character. In all editions of D&D this can be fun, but it brings with it some risks of not fitting with the rest of your party, and balance issues run amok. In the DMG Chapter 9, the Dungeon Master's Workshop, some tools are available for you both to work with.
In order to "make it stronger" (I presume by that you mean gain capability as you progress in level) apply the same XP goals as other characters for levels 1 through 20, then agree on the special skills and traits that accrue as levels progress: you'll want to fit in special abilities at levels 2, 3, 5, 6, 10, 14, 18, and maybe 20. (Or, drop one of the later ones, that may be a bit much ...)
By level six, your homebrew character should look something like the stats of "Animated Armor," which has six hit dice.
Animated Armor (Medium construct, unaligned)
Armor Class 18 (natural armor)
Hit Points 33 (6d8 + 6)
Speed 25 ft.
Abilities: STR 14(+2) DEX 11(+0) CON 13(+1) INT 1(−5) WIS 3(−4) CHA 1(−5)
Damage Immunities poison, psychic
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, paralyzed, petrified, poisoned
Senses blindsight 60 ft. (blind beyond this radius)
Passive Perception 6
Antimagic Susceptibility. The armor is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the armor must succeed on a Constitution saving throw against the caster’s spell save DC or fall unconscious for 1 minute.
False Appearance. While the armor remains motionless, it is indistinguishable from a normal suit of armor.
Actions
Multiattack. The armor makes two melee attacks.
Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.
Hit: 5 (1d6 + 2) bludgeoning damage.This suit of magically animated plate armor clamors as it moves, banging and grinding like the vengeful spirit of a fallen knight.
Conclusion: Stealth checks at disadvantage, if even allowed. Good luck keeping this a secret.
These strengths and weaknesses need to be addressed before you make it into a playable race.
Working with your DM is critical for two reasons:
This answer depends on how you and your DM answer Question 1. Your decision on a Warforged character, or a playable suit of animated armor (monster/construct) as a PC will result in a homebrew character. Any homebrew (which can be great fun!) must (I repeat must) be compatible with:
This takes us back to answer 1:
Work with your DM to see how you can fit this idea into his campaign.
Warning: if anyone succeeds in giving your character a heart, you may turn into a flesh and blood human being! Be wary of picking up the wrong magical axe, young girls with dogs, lions, and scarecrows. :-)
Much of the following is taken from the Wikipedia page on Eladrin, as they are very scattered in appearances.
Best Answer
Canonfire! has a good Bullywug article with an extensive bibliography that should list all the early-D&D sources of info on bullywugs.
More recently, Pathfinder has renamed the bullywug the "boggard" due to IP concerns and has used them extensively, see this wiki article and its references but especially the "Ecology of the Boggard" in the Kingmaker adventure path. All this information has the virtue of being in print and easily obtainable, though any crunch will be 3.5 compatible and not 4e compatible.