Mega Latios
Dragon · Psychic · 700 BST · Latiosite
| Stat | Base | Mega | Relative size | Change |
|---|---|---|---|---|
| HP | 80 | 80 | — | |
| Attack | 90 | 130 | +40 | |
| Defense | 80 | 100 | +20 | |
| Sp. Atk | 130 | 160 | +30 | |
| Sp. Def | 110 | 120 | +10 | |
| Speed | 110 | 110 | — | |
| Total | 600 | 700 | +100 |
| Stat | Base | Mega | Relative size | Change |
|---|---|---|---|---|
| HP | 80 | 80 | — | |
| Attack | 90 | 130 | +40 | |
| Defense | 80 | 100 | +20 | |
| Sp. Atk | 130 | 160 | +30 | |
| Sp. Def | 110 | 120 | +10 | |
| Speed | 110 | 110 | — | |
| Total | 600 | 700 | +100 |
Latios, number 381 in the National Dex and a Hoenn Pokémon, holds Latiosite to become Mega Latios, taking its total from 600 to 700. The biggest single gain is 40 Attack, followed by 30 Sp. Atk. Nothing goes down — HP and Speed stay exactly where they were.
The typing does not change — it is Dragon and Psychic before and after — so the Mega is the same defensive problem as the base form, only bigger. The ability stays Levitate.
As Dragon and Psychic, 6 of the eighteen attacking types get through for extra damage. It resists 6. The full board is above; the short version is that the types listed under ×2 and ×4 are the ones worth planning around.
Mega Latios cannot be used in the current Pokémon Champions regulation, so there is no ladder data for it and no legal set to report. Latios is not legal either, so the whole line sits outside the format rather than just the Mega.
Regulation M-B closes on 9 September 2026, and legality is regenerated from the format data on every build rather than written by hand, so this page will change on its own if that changes.
Smogon publishes no head-to-head checks-and-counters data for doubles formats, so this list is computed, not measured: these are the most-played Regulation M-B Pokémon carrying a damaging move of a type Mega Latios takes extra damage from.
Of the 91 Mega forms in the dex, Mega Latios is 15th by base stat total. Its best stat is Sp. Atk at 160, which is 16th among Megas; its worst is HP at 80, 42nd. One other Mega shares the Dragon and Psychic typing and therefore this exact matchup board: Mega Latias.
A Mega slot is a commitment: the stone occupies the held item, so whatever Mega Latios would have wanted from an item, it does not get. Drop it into the team builder to see what the rest of the six then have to cover, or take it to the damage calculator to find out whether those 160 points of Special Attack actually change a knockout.