Does Trainer Fly still work in Pokemon Yellow?

Yes. Yellow keeps the long-range trainer glitch and adds an early Viridian Forest Bug Catcher setup so you can force encounters before Fly. MissingNo. old-man glitch paths differ and are mostly removed in Yellow.

How does Special choose the Pokemon?

The last foe’s Special stat is reused as an internal species index. Trainer Pokemon use Special DV 8 and no Stat Exp, so Special is floor((BaseSpecial + 8) × Level / 50) + 5. Special 21 forces Mew.

Why must the mid-glitch trainer walk into me?

After the long-range escape, Start can freeze. Fighting a trainer who walks at least one tile restores control. Talking face-to-face during that state can softlock the setup.

Is this the same as the Mew glitch?

Mew is the most popular Trainer Fly target (Special 21). The same framework can force other indexes. Use the Mew guide for full catch routes; use this page for the general engine, index lookup, and Special calculator.

Pokemon Yellow Trainer Fly Glitch - Special Index Encounter Tool

Q: What is the Trainer Fly glitch in Pokemon Yellow?

Trainer Fly (long-range trainer glitch) lets you escape a sight-range trainer engagement with Escape Rope, Dig, Fly, or Teleport, restore menu control with a walking trainer battle, load a foe Special stat as a species index, then return to the escape map to force a Level 7 wild encounter of that index. Mew is index 21.

Glitch toolkit · Long-range engine

Pokemon Yellow Trainer Fly Glitch

Escape a long-range trainer, restore controls with a walking trainer, load a foe’s Special as a species index, then return for a Level 7 forced encounter. Mew is index 21—Yellow can do it early via the Viridian Forest Bug Catcher. Use the calculator and index lookup below for any Special target.

Works in Yellow Encounter Lv.7 Mew = Sp.21 Trainer DV Special 8 Early Forest setup Not MissingNo. old man

Long-range Bug Catcher — Long-range escape

Fast answer

Four phases, one stored Special

1) Trigger a long-range trainer, open Start mid-approach, leave with Escape Rope / Dig / Fly / Teleport. 2) Fight a trainer who walks ≥1 tile into you (restores the menu). 3) End a battle on a mon whose Special equals the index you want—trainer Special is deterministic: floor((Base + 8) × Level / 50) + 5. 4) Return to the escape map with no extra fights; close auto Start → wild Level 7 of that index. For Mew routes with step-by-step catch tips, open the Mew glitch guide.

4Setup phases

7Forced encounter level

21Mew internal index

8Trainer Special DV

Safety

Save often · softlocks are real

Talking face-to-face with a trainer during the frozen-menu phase, fighting after you load Special, or stepping into grass before the return can break the setup. Keep a save before the long-range Escape Rope and before the Special donor fight. This is an informational glitch guide—not a substitute for careful play.

Engine

The four Trainer Fly phases

Interactive tool

Special index lookup & trainer Special calculator

Look up which species a Special value forces, or compute a trainer mon’s Special from base stat + level (DV 8, no Stat Exp).

Target Special / index Or pick species Popular targets

Trainer Special calculator

Base Special Level Quick mon

Index 21

Forced encounter

Mew

Dex #151 · index $15 · wild Level 7

Trainer formula at Base 60 Lv.12 → Special 21.

Open Pokedex Catch Planner Mew full route

Index table

Special → species (filterable)

Filter name

Special / index	Hex	Species	Dex	Base Sp.

Long-range anchors

Yellow long-range trainers used for setups

Special 21 donors

Reliable Mew loaders (trainer parties)

More species can hit Special 21 at other levels. Use the calculator: e.g. base 60 needs Lv.12; base 40 needs Lv.17; base 45 needs Lv.16.

Yellow presets

One-click method cards

Early MewTarget Sp.21

Early Viridian Forest → Mt. Moon Koffing

Load the Forest long-range Bug Catcher and Mt. Moon Super Nerd path. Full walkthrough steps live on the Mew guide.

Escape options

How you leave the long-range fight

Escape Rope

Best early-game option. Heal at a Center first so the rope returns there. Pewter Center is the Forest method hub.

Items catalog

Teleport

Abra / Kadabra or TM30. Yellow TM05 is Mega Kick, not Teleport. Yellow Abra is not on Route 24/25 grass—plan catches via Route 5, Game Corner, or other listed sources.

Abra dex Catch Abra

Fly (HM02)

Classic late setup. Escape with Fly to a town, then walk back onto the escape route to trigger the encounter.

Fly destinations

Dig

Works when the last outdoor map is a valid Dig target (caves / dungeons). Less common for early Mew routes.

Moves

Checklist

Setup tracker

Saved on this device only.

Save before long-range escapeHard reset insurance. Long-range trainer still undefeatedForest #15, Route 24 Jr.♂ #2, or Route 8 Gambler #5. Walking trainer reservedMust walk ≥1 tile; not face-to-face only. Escaped mid-approachRope / Dig / Fly / Teleport before battle. Walking trainer defeatedMenu control restored. Special index loadedEnded on correct foe; no extra battles after. Returned to escape mapClosed auto Start → Level 7 encounter. Caught / recordedMark in Pokedex & Catch Planner.

0 of 8 checked

Play tips

Keep the glitch stable

Open Start at least once

Before re-entering the escape map, flash Start so text-box state is safe. Auto Start on entry is expected—close it to spawn the encounter.

No battles after Special

Any other fight overwrites the stored Special. Path carefully through grass; Escape Rope again if your route risks wilds.

Growl can lower encounter level

Using Growl on the Special-21 mon before it faints can reduce the forced encounter’s level via Attack stage quirks—optional catch cheese.

Ditto is a flexible loader

Wild Ditto Transform copies your mon’s Special. Pair with Trainer Fly when you need an index your fixed trainers do not provide. See the Ditto glitch page.

FAQ

Trainer Fly questions

What is the Trainer Fly glitch in Pokemon Yellow?

A long-range trainer escape plus Special-as-species-index exploit that forces a Level 7 wild encounter when you return to the escape map. Mew is the famous Special 21 case.

Does it work without Fly?

Yes. Escape Rope and Teleport are enough. Yellow’s Forest Bug Catcher is the classic no-Fly early path.

Is this MissingNo.?

No. MissingNo. uses different glitches (old man / Cinnabar paths are largely removed or different in Yellow). Trainer Fly is the Mew-family engine. See the MissingNo. FAQ.

Can I get any Pokemon?

Any valid internal index that maps to a species (and some glitch slots). Use the index table—Special is not the National Dex number except by coincidence.

Where are full Mew step lists?

On the Mew glitch guide—early Forest, Route 24 quick, and classic Route 8 routes with catch tips.

Linked tools