Type matchups

Mega Gyarados

Best against

Which raid bosses Mega Gyarados is a top counter for, aggregated over the 120 bosses on the roster the same way pokebattler.com aggregates its own attacker rankings.

Top ten finishes

of 120 bosses ranked

Matchups

bosses it places on at all

Points

110

Pokebattler's published weighting

Its best showing is15againstHoopa(Tier 5) with Bite + Crunch.

#15Hoopapsychicghost
Estimator
1.42
Time to win
6:33
Points
20
Bite + Crunch
#15Necrozma (Dawn Wings)psychicghost
Estimator
1.71
Time to win
7:52
Points
20
Bite + Crunch
#17Groudonground
Estimator
2.76
Time to win
12:41
Points
10
Waterfall + Hydro Pump
#18Lunalapsychicghost
Estimator
1.53
Time to win
7:01
Points
10
Bite + Crunch
#22Blacephalonfireghost
Estimator
1.77
Time to win
8:09
Points
10
Waterfall + Hydro Pump
#23Enteifire
Estimator
2.00
Time to win
9:11
Points
10
Waterfall + Hydro Pump
#23Necrozmapsychic
Estimator
2.39
Time to win
10:59
Points
10
Bite + Crunch
#26Azelfpsychic
Estimator
1.92
Time to win
8:50
Points
10
Bite + Crunch
#28Meloetta (Aria)normalpsychic
Estimator
2.84
Time to win
13:04
Points
10
Bite + Crunch

Place	Boss	Tier	Moveset used	Estimator	Time to win	Points
#15	Hoopapsychicghost	Tier 5	Bite + Crunch	1.42	6:33	20
#15	Necrozma (Dawn Wings)psychicghost	Tier 5	Bite + Crunch	1.71	7:52	20
#17	Groudonground	Tier 5	Waterfall + Hydro Pump	2.76	12:41	10
#18	Lunalapsychicghost	Tier 5	Bite + Crunch	1.53	7:01	10
#22	Blacephalonfireghost	Tier 5	Waterfall + Hydro Pump	1.77	8:09	10
#23	Enteifire	Tier 5	Waterfall + Hydro Pump	2.00	9:11	10
#23	Necrozmapsychic	Tier 5	Bite + Crunch	2.39	10:59	10
#26	Azelfpsychic	Tier 5	Bite + Crunch	1.92	8:50	10
#28	Meloetta (Aria)normalpsychic	Tier 5	Bite + Crunch	2.84	13:04	10

"Details" opens Mega Gyarados's per-move damage against that boss, its breakpoints and its energy cycle — the same drawer the boss page opens.

Mega Gyarados places nowhere with Shadow, Mega and Legendary attackers hidden, so the table above is the everything-on ranking. With everything switched on it places on 9 bosses (best #15 vs Hoopa). Points follow pokebattler.com's published rule — 5 for a first place, 4 for a second, 3 for a fourth, 2 for an eighth, 1 for a sixteenth, weighted 10x at Tier 5 / Mega, 4x at Tier 3 and 0x at Tier 1. Level 40, 15/15/15, no weather, no friendship, no dodging. Snapshot generated 2026-10-08.

Type matchups

Every one of the 18 attacking types against this typing. GO multipliers: 1.6x super effective, 0.625x resisted, 0.390625x doubly resisted.

fighting1.6x bug1.6x grass1.6x electric1.6x fairy1.6x normal1x flying1x poison1x ground1x rock1x dragon1x ghost0.63x steel0.63x fire0.63x water0.63x ice0.63x dark0.63x psychic0.39x

Weak (5)
Neutral (6)
Resists (7)

Weak to

1.6xfighting bug grass electric fairy

Resists

0.39xpsychic

0.63xghost steel fire water ice dark

Every tile and chip is a link: it opens the Pokedex filtered to that type, so a weakness leads straight to the attackers that exploit it. Pokebattler lists only the weaknesses; the eleven types that do neither matter as much to a raider deciding what to bring, so all 18 are shown with the exact multiplier.

Same typing, same matchups

Released water / dark forms with the highest attack — they share every weakness and resistance above.