Here are some esports name ideas based on "Marvel rivals nickname":

Aggressive & Powerful:

• Ironclad Avengers
• Asgardian Renegades
• Titan Takers
• Web Warriors' Wrath
• Mjolnir Maulers
• Wakandan Warlords
• Cosmic Crusaders
• Hydra's Bane
• Doom's Demise
• Vibranium Vipers

Strategic & Clever:

• Stark Tech Squad
• Xavier's Gambit
• Mystic Masters
• Spider-Sense Strikers
• Shadow Syndicate
• Strategic Avengers
• Asgardian Strategists
• Quantum Quakes
• Chronal Commanders
• Dimensional Dominators

Unique & Creative:

• Celestial Clash
• Ragnarok Riders
• Infinity Gauntlet Gamers
• Midgard Mavericks
• Asgard's Ascent
• Wakanda's Warriors
• The Serpent's Coil
• The Green Goblin's Grin
• The Scarlet Witch's Spell
• The Mad Titan's Might

Team Names incorporating specific Marvel characters (rivalries implied):

• Cap vs. Iron (Captain America vs. Iron Man)
• Thor's Fury (against Loki's schemes)
• Hulk Smash (implying dominance over opponents)
• Spider-Man's Sting (quick and agile)
• Black Panther's Prowl (stealth and strategy)
• Doctor Strange's Sorcery (mystical and unpredictable)

Remember to check for trademark conflicts before settling on a name. You can also combine elements from different categories above to create something truly unique.