Hoenn has the most side content in PBO, and most of it opens after you become Hoenn Champion: several Mega Stone quests, the Regis, the Eon Duo and weekly Champion battles. The guides below give full solutions, so they contain spoilers.
Sage Eron and the Regis
Explore three caverns for 
Sage Eron, solve a riddle, then battle the Regis daily.
Needs: Hoenn Champion, a self-caught trio (changes every 4 months)
Reward: daily 
Regirock, 
Regice and 
Registeel battles, Regi cores for crafting
The Eon Duo
Free 
Latios and 
Latias from 
Archie and Team Aqua on the Secret Islet.
Needs: Hoenn Champion, 500 caught
Reward: 
Eon Flute, Latios or Latias roaming
Blazikenite, Sceptilite and Swampertite
Calm three Mega starters for 
May, 
Professor Cozmo and 
Wally with items made from Safari starters.
Needs: Hoenn Champion, 10 high-IV Safari starters each
Reward: Champions May, Cozmo and Wally; 
Blazikenite, 
Sceptilite, 
Swampertite
Metagrossite
Rebuild 
Steven’s shattered stone from three fragments.
Needs: Hoenn Champion, self-caught 
Beldum line, Dive, fishing level 20, level 100 Metagross
Reward: 
Metagrossite
Aerodactylite
Collect five 
Aerodactyl fragments for 
Ruin Maniac Dusty.
Needs: self-caught Aerodactyl, a self-caught level 100 Swellow, a self-caught Lileep or Anorith, mining level 40, Champion Cozmo (from the Sceptilite quest)
Reward: 
Aerodactylite
Salamencite
Track 
Drake across three regions and beat him three times.
Needs: Hoenn Champion, self-caught 
Kingdra, 
Altaria and 
Salamence
Reward: 
Salamencite
Maxie and Cameruptite
Maxie is a weekly Champion in the Cave of Origin.
Needs: Hoenn Champion, 10 legendaries caught
Reward: chance at 
Cameruptite
Ethereal Wisps and Sablenite
Collect 100 wisps hidden across three regions.
Needs: 7 Sinnoh badges to start; the wisp maps also need mining levels 60 and 80, 400 caught, Sinnoh Champion and Safari Tickets
Reward: 
Sablenite
Officer Jenny and the Prison Bottle
Find 
Jenny’s Prison Key in Shoal Cave and unmask an impostor.
Needs: 400 caught, 50 Purple Ooze, an 
Arcanine
Reward: 
Prison Bottle, Champion Jenny
The missing Baxcalibur
Chase a runaway 
Baxcalibur through three hiding spots.
Needs: 7 badges, 300 caught
Reward: access to wild 
Frigibax
Find King Bisharp
Show 
Blaze's Aide a level 100 
Bisharp, then beat King Bisharp in its hidden den on Mt. Pyre.
Needs: a self-caught level 100 Bisharp, 8 Hoenn badges
Reward: 
Leader's Crest, which evolves Bisharp into 
Kingambit
The Pacifidlog mayor's requests
Find the lost crew, cargo and notebook in the sunken Abandoned Ships for the mayor of Pacifidlog Town.
Needs: 8 Hoenn badges, Dive
Reward: 12,500 F in all, 
Water Stone, 
Star Piece, 
Comet Shard; opens the Abandoned Ships
The Hex Maniacs of Mt. Pyre
Beat ten trainers of levels 80–100.
Reset: weekly (Monday)
Reward: 5,000 F and an item from 
Hex Maniac Katrina Crane
The Seashore House
The Hoenn Daycare
Show a new self-caught Hoenn Pokémon each day to 
Breeder Tia.
Reset: daily
Reward: 
Daycare Tokenx15–45 per Pokémon
All on one page: Small quests in Hoenn. Every item ball in the region is listed in Items on the ground in Hoenn.
| Quest | Starts | Reward |
|---|---|---|
| Show-and-tell requests | Oldale, Petalburg, Rustboro | Money and items |
| The Winstrate family | Route 111 | Daily money |
| Dive Ball delivery | Verdanturf Town |  Dive Ballx5 |
| Xueying’s Doll | Verdanturf Town |  Auspicious Armor or  Malicious Armor |
| The Mining Foreman | Lavaridge Town | Miner's Genesis Kit |
| Shoal Cave and the Shell Bell | Route 125 |  Shell Bell |
| Finn’s Lost Snorkel | Treasure Hunter House, Route 124 | Finn’s Abyssal Pearl shop |
Looking for the main story instead? See the Hoenn walkthrough. For all Champion battles, see Gyms, Elite Four and Champions.
Owner Mike