Head-to-head
Charizard vs Blastoise
The Gen 1 starter showdown — Fire/Flying vs Water.
Side-by-side
Charizard
Fire/Flying · #0006
BST: 534
Blastoise
Water/None · #0009
BST: 530
Verdict
Winner: Blastoise (base) / Mega Charizard (Mega forms)
Type advantage gives base Blastoise the win. Mega Charizard X/Y flips the matchup because of weather and Dragon coverage.
Context: why this matchup matters
Charizard and Blastoise are two of the three Gen 1 starters (1996), defined by their iconic mascot status and their type-matchup advantage (Water > Fire). The 'who would win' debate has raged since the playground in 1998. The answer is more nuanced than 'Water beats Fire'.
Stat battle: who has the numbers?
Charizard: 78/84/78/109/85/100 BST 534. Special attacker with offensive stats (109 SpA, 100 Speed). Blastoise: 79/83/100/85/105/78 BST 530. Defensive tank with balanced bulk (100 Def, 105 SpDef). Charizard wins Speed by 22 points (100 vs 78); Blastoise wins Defense by 22 (100 vs 78). Mirror stat profile.
Mega forms: Mega Charizard Y (634 BST: 78/104/78/159/115/100) becomes a special wallbreaker with Drought. Mega Charizard X (634 BST: 78/130/111/130/85/100) becomes a Fire/Dragon physical attacker. Mega Blastoise (630 BST: 79/103/120/135/115/78) becomes a Water/Steel-ish special tank with Mega Launcher boosting Aura Sphere/pulse moves +50%.
Full matchup analysis
In a vacuum: Blastoise wins because Water > Fire (2× damage), Charizard 4× weak to Rock attacks isn't relevant here, but Surf or Hydro Pump from Blastoise easily 2HKOes Charizard. Charizard's only counter-play is using Air Slash / Hurricane (Flying STAB hits Water neutral) but Blastoise's bulk easily survives 2 hits.
With both Mega forms active: Mega Charizard Y's Solar Power + Sun-boosted Fire Blast does manage to 2HKO Mega Blastoise (Sun + Specs-equivalent damage breaks through Mega Blastoise's bulk). Mega Charizard X's Tough Claws Dragon Claw also wins the matchup since Dragon hits Water neutral and X has more Attack.
Real verdict: Base Charizard loses cleanly to base Blastoise (you go in expecting Water STAB, Blastoise wins). Mega Charizard (either form) wins the Mega mirror.
Competitive viability: Charizard sees more competitive play because Sun teams are stronger than 'bulky Water without a niche' (Blastoise is just a worse Slowking-Galar). Mega Charizard X is OU-tier; Mega Blastoise is RU-tier.
When to pick each
Pick Charizard for: Sun teams, Mega Y wallbreaking, Mega X Dragon Dance sweeping, classic mascot energy, Solar Power 3.375× effective damage on Fire Blast.
Pick Blastoise for: Bulky special tanking, Mega Launcher Aura Sphere/pulse-move spam, Shell Smash setup (Hidden Ability), Rapid Spin hazard removal, defensive Water-type cores. Mega Blastoise is genuinely underrated as a slow special wallbreaker.