The colossal Normal-type Legendary, Regigigas, is finally making its debut as a Shadow Raid Boss, and this is an event Pokémon GO Trainers cannot afford to miss. Scheduled for a limited three-hour window, the *Shadow Regigigas Raid Day* on Saturday, May 17, 2025, marks a massive opportunity for players to capture one of the rarest Pokémon in the game, including its highly anticipated Shiny variant. This definitive guide breaks down the event schedule, the only weakness you need to exploit, the absolute best counters, and the all-important 100% IV CP values to help you maximize your catches during this crucial *May 2025 Pokémon GO event*. This dedicated *Raid Day* is a high-stakes, high-reward event, featuring the Shadow variant of the leader of the Legendary Titans. Unlike standard raids, Shadow Raids require a coordinated effort to subdue the enraged Pokémon, making preparation with the right *Shadow Regigigas counters* absolutely essential. The immense power of a Shadow Legendary, especially one with a max CP of 4913, means every Trainer must come prepared with a full squad of top-tier Fighting-type attackers to succeed.
Shadow Regigigas Raid Day: Date, Time, and Essential Bonuses
The *Shadow Regigigas Raid Day* is a three-hour, local-time event designed to maximize raid opportunities and reward active players. Understanding the schedule and taking advantage of the unique bonuses is the key to a successful day of raiding.
Event Details and Schedule
- Date: Saturday, May 17, 2025
- Time: 2:00 p.m. to 5:00 p.m. local time
- Raid Tier: Tier 5 Shadow Raids featuring Shadow Regigigas
- Shiny Debut: Shiny Shadow Regigigas will be available for the first time
Crucial Event Bonuses
The bonuses active during the three-hour window are specifically tailored to help Trainers complete as many raids as possible, significantly boosting your chances of catching a perfect IV or *Shiny Regigigas*.
- Extra Free Raid Passes: Trainers can receive up to five additional free Raid Passes from spinning Gym Photo Discs during the event, for a total of six free passes for the day.
- Boosted Shiny Rate: The chance of encountering *Shiny Regigigas* from a successful Shadow Raid will be significantly boosted to approximately 1 in 10 encounters.
- Higher IV Floor: Regigigas caught from these Shadow Raids will have a higher IV floor, meaning they will have better base stats than those caught from standard encounters.
- Remote Raid Limit: While Shadow Raids are typically in-person only, check in-game announcements for any temporary relaxation of the remote raid limit for the day.
The Shadow Regigigas Weakness and Best Counters Guide
Regigigas is a pure Normal-type Pokémon. This is a crucial detail, as Normal-type Pokémon have only one single, glaring *Normal-type weakness* that you must exploit: Fighting-type moves.
The Single Weakness: Fighting-Type
Shadow Regigigas is weak to
Fighting-type attacks and resistant to Ghost-type attacks. To secure a victory in the *Shadow Regigigas raid*, your entire team should be composed of your strongest Fighting-type Pokémon, powered up with the best Fighting-type movesets.
Top 5 Absolute Best Shadow Regigigas Counters
To defeat this powerful Legendary, you will need to utilize Mega Evolutions and high-DPS (Damage Per Second) attackers. The following Pokémon are the absolute best *Shadow Regigigas counters* to anchor your raid team:
- Mega Lucario: The undisputed king of Fighting-type damage.
- Recommended Moveset: Counter (Fast) and Aura Sphere (Charged)
- Mega Heracross: An excellent choice, especially if you have access to its Mega Evolution.
- Recommended Moveset: Counter (Fast) and Close Combat or Megahorn (Charged)
- Terrakion: A formidable Legendary attacker with high raw power.
- Recommended Moveset: Double Kick (Fast) and Sacred Sword (Charged)
- Mega Blaziken: Provides great damage and a Mega boost to other Fighting-type attackers.
- Recommended Moveset: Counter (Fast) and Focus Blast or Blast Burn (Charged)
- Keldeo: A strong Mythical Pokémon that excels in this matchup.
- Recommended Moveset: Low Kick (Fast) and Secret Sword (Charged)
Other Strong Counters (LSI Entities): Don't overlook non-Mega powerhouses like Machamp, Conkeldurr, Lucario, Breloom, and Hariyama. If you lack the Mega Energy, a team of six high-level Machamp with *Counter* and *Dynamic Punch* is still a highly effective strategy.
Shadow Raid Mechanics: Purify Gems and CP Values
Shadow Raids are unique because the Raid Boss, being an enraged Shadow Pokémon, receives a significant boost to its Attack and Defense. This makes the raid significantly harder than a standard Legendary raid and requires the use of Purified Gems.
The Importance of Purified Gems
During the battle, the Shadow Regigigas will occasionally become enraged, boosting its stats dramatically. To temporarily subdue it and reduce its defense, Trainers must use
Purified Gems.
- How to Use: Collect Shadow Shards from Team GO Rocket Grunts and Leaders, then use the Shard Refiner to create Purified Gems.
- Strategy: Coordinate with your raid group to use multiple Purified Gems throughout the battle. Using eight Purified Gems will completely quell the Shadow Regigigas's rage, making the rest of the battle much easier.
Shadow Regigigas Hundo CP and Max CP
Catching a 100% IV (*hundo*) Pokémon is the ultimate goal for any serious Trainer. The *Regigigas hundo CP* values are critical for quickly identifying a perfect specimen on the catch screen.
| Encounter Type | CP Range | 100% IV (Hundo) CP |
| Standard Encounter (Level 20) | 2389 CP – 2483 CP | 2483 CP |
| Weather Boosted (Partly Cloudy - Level 25) | 2987 CP – 3104 CP | 3104 CP |
The maximum Combat Power (*Max CP*) for a Level 50 Regigigas is 4913 CP. Targeting the 2483 CP and 3104 CP values is your best bet for securing a perfect *Shadow Regigigas*.
Shadow Regigigas Moveset and Post-Raid Utility
Understanding the moveset of the raid boss helps you select the right counters, and knowing the best moveset for your caught Regigigas helps you determine its value in the meta.
Raid Boss Moveset
Shadow Regigigas, as a raid boss, can use a variety of Fast and Charged Moves. The Fast Moves include *Hidden Power* (various types) and *Zen Headbutt* (Psychic). Its Charged Moves are diverse and powerful: *Giga Impact* (Normal), *Thunder* (Electric), *Focus Blast* (Fighting), and *Crush Grip* (Normal). Since its only weakness is Fighting, having Fighting-type counters will ensure you deal Super Effective damage regardless of the boss’s moves.
Best Moveset for Shadow Regigigas
Once purified, or if you plan to keep it Shadow, Regigigas is a powerful Normal-type attacker. Its best overall moveset for general damage is:
- Fast Move: Zen Headbutt (Psychic) or Hidden Power (Varies)
- Charged Move: Crush Grip (Normal) or Giga Impact (Normal)
Note that while it has a high Attack stat, its utility is often limited due to the general lack of need for Normal-type attackers in the *Pokémon GO* meta. However, a high-IV
Shadow Regigigas is a fantastic collector's item and a formidable presence in any Trainer's collection. Prepare your Purified Gems, stock up on Raid Passes, and power up your best Fighting-type Pokémon. The *Shadow Regigigas Raid Day* is a fleeting, high-octane event that offers the first chance to add the magnificent *Shiny Shadow Regigigas* to your Pokedex. Don't miss this opportunity on May 17, 2025!
