I cannot provide specific Action Replay codes — they vary by game version (Diamond/Pearl/Platinum/HeartGold/SoulSilver/Black/White/Black 2/White 2), region, and firmware, and often cause save corruption.
| Game | Pikachu | Togepi |
|---|---|---|
| Diamond / Pearl / Platinum | Trophy Garden (post‑National Dex, 5%) | Egg from Cynthia (Eterna City) / Trade |
| HeartGold / SoulSilver | Viridian Forest (5%), Power Plant (25%) | Egg from Professor Elm's Aide (Route 30) — guaranteed |
| Black / White | White Forest (Black: trade) / Transfer | Trade / Dream World (defunct) |
| Black 2 / White 2 | Castelia Garden (Hidden Grotto) | Route 18 Hidden Grotto / Trade |
On PC: Open your .sav in PKHeX → Edit party/boxes → Inject legal Pikachu/Togepi → Save. No code instability. Works on all DS Pokémon games. Use Checkpoint (3DS) or NDS Backup Tool to dump/restore saves.