Tiamat (Dungeons and Dragons)

Dungeons & Dragons · Tabletop · Evil Dragon Deity

Weakened by Hell

Tier: LOW 6-B, up to 6-B
Attack Potency: Small Country Level, up to Country Level
Speed: Ftl, up to Ftl+
Durability: Small Country Level, up to Country Level

Avatar

Tier: HIGH 6-A
Attack Potency: Multi-Continent Level
Speed: Ftl, up to Ftl+
Durability: Multi-Continent Level

True Form

Tier: 2-C
Attack Potency: Low Multiverse Level
Speed: Infinite
Durability: Low Multiverse Level

Powers and abilities

Superhuman Physical Characteristics
Immortality (Types 1, 2, 3, 4, and 8, Avatars have 6 and 9)
Large Size (Varies, but at least Type 1)
Possession
Astral Projection
Conceptual Manipulation (Type 1, controls the domains of Strife, Treachery, and Tyranny)
Regeneration (Mid-Godly)
Regeneration Nullification (Up to Mid-Godly)
Existence Erasure
Reality Warping
Creation
Life Manipulation
Soul Manipulation
Causality Manipulation
Death Manipulation
Matter Manipulation
Mind Manipulation
Corruption (Types 1, and 2)
Pocket Reality Manipulation
Time Manipulation
Spatial Manipulation
Abstract Existence (Type 1, represents a core force of the multiverse, pure abstraction given the illusion of form)
Subjective Reality
Absorption
Fear Manipulation
Law Manipulation/Chaos Manipulation (As an Abstract being, Tiamat contributes directly and significantly to the multiversal balance of good and evil, law and chaos- as a God, her presence alone is enough to cause passive effects across multiple universes if not directly counteracted. Such effects include shunting said realities into various parts of the cosmos, death and destruction of all within said reality, and so on)
Biological Manipulation
Memory Manipulation
Incorporeality
Avatar Creation
Summoning
Clairvoyance
Text Manipulation
Pain Manipulation
True Sight
Probability Manipulation (All actions of Tiamat go as perfectly as possible- she will always hit a perfect mark, she will always resist an effect if possible, she will always suffer only a grazing blow at worst; even when she cannot resist an effect that might work on her, Probability will reorder itself to render her immune due to Legendary Resistances)
Body Control
Acid Manipulation
Fire Manipulation
Electricity Manipulation

Weaknesses

Cannot leave Hell without an immensely powerful magical ritual- even with this, she is wildly weakened until the ritual is complete, and cannot regenerate normally (rather, she will return to Baator for some undescribed amount of time) and cannot return unless the ritual continues

Ranked tied for #12 of 704 in Dungeons & Dragons by strength.

Close fights from other series

Tiamat (Dungeons and Dragons) vs One Being (Mortal Kombat · Tier 2-C): One Being · Slight edge
Tiamat (Dungeons and Dragons) vs System XX (BlazBlue · Tier 2-C): System XX · Slight edge
Tiamat (Dungeons and Dragons) vs The Great Intelligence (Doctor Who · Tier 2-C): The Great Intelligence · Slight edge
Tiamat (Dungeons and Dragons) vs Tenshi Hinanawi (Touhou Project · Tier 2-C): Too close to call
Tiamat (Dungeons and Dragons) vs Tower (Sonic · Tier 2-C): Too close to call
Tiamat (Dungeons and Dragons) vs Aeolus (Mega Man · Tier 2-C): Tiamat · Slight edge
Tiamat (Dungeons and Dragons) vs Arc (Final Fantasy · Tier 2-C): Tiamat · Slight edge
Tiamat (Dungeons and Dragons) vs ChuChu (Kirby · Tier 2-C): Tiamat · Slight edge

Compare Tiamat (Dungeons and Dragons) with another character · Tiamat (Dungeons and Dragons) on the VS Battles Wiki