Thor

With: Captain America (Infinity War)

Cosmic Champions: Increase their Buff Duration by +25%.

With: Count Nefaria

All champions: +155 Critical Rating.

With: Doctor Strange

All Champions: +130 Armor Rating.

With: Enchantress

All Champions: +5% Combat Power Rate.

With: Gorr

Gorr: Shadow Magic Buff duration increased by 2 second(s).

With: Heimdall

All Champions except Heimdall: Once per fight Heimdall will intercede on your behalf, dash back and hold Block for 1.5 seconds to Regenerate 15% of missing Health instantly.

With: Hercules

Hercules: Well-Timed Blocks gain 100% Perfect Block chance while at or below 5% max health. Thor: Well-Timed Blocks gain 20% Perfect Block chance while the Opponent is suffering from an Armor Break Debuff.

With: High Evolutionary

All Champions: +155 Critical Rating.

With: Hulk

All Champions: +115 Critical Damage Rating.

With: Hulk (Immortal)

Hulk (Immortal): Personal Stun Effects have +10% increased duration. Thor: Opponents suffer -10% Ability Accuracy while Stunned.

With: Hyperion

All Champions: +130 Armor Rating.

With: Iron Man

All Champions: +5% Perfect Block Chance.

With: Kang the Conqueror

All Champions: +155 Critical Rating.

With: Knull

Knull: +15% Attack Rating while the Opponent is Corrupted

With: Loki

All Champions: +6% Health.

With: Mangog

All Champions: +6% Attack Rating.

With: Mordo

All Champions: +155 Critical Rating.

With: Ms. Marvel

All Champions: +5% Perfect Block Chance.

With: Odin

Thor: +5% Buff Duration for each fight the team has won.

With: Punisher 2099

Punisher 2099: The first use of the Nano-Tech Battery is immediately recharged. Thor: +10% Fury Potency.

With: Silver Centurion

Thor: Landing any Special Attack inflicts a Shock Debuff dealing 40% of Attack over 8 seconds.

With: Stryfe

Stryfe: Start the fight with Invisibility active. Thor: Activating a Special Attack grants +3 Fury Buffs each granting 10% Attack Rating for 6 seconds.

With: Superior Iron Man

All Champions: +5% Perfect Block Chance.

With: The Destroyer

All Champions: +155 Critical Rating.

With: The Maker

All Champions: +115 Critical Damage Rating.

With: The Serpent

Synergy Champions: Hammer attacks gain +20% Attack Rating.

With: Thor (Jane Foster)

All Champions: +5% Combat Power Rate.

With: Ultron (Classic)

All Champions: +6% Attack Rating.

With: Void

All Champions: +155 Critical Rating.

With: Vox

Attacking and Defending Vox: While fighting against Synergy Champions, receive +10% damage from hits involving hammers. Other Synergy Champions: Attacks involving hammers have +10% Attack Rating.