雷丘（日文：ライチュウ，英文：Raichu）是《寶可夢》系列中的一隻非常著名的電屬性寶可夢，最早出現於第一世代的《寶可夢紅／綠》遊戲中。是皮卡丘的進化型，當皮卡丘使用雷之石時，就會進化成雷丘。雖然皮卡丘因為是寶可夢的吉祥物而享有極高的知名度，但雷丘憑藉更強大的戰鬥能力和成熟的設計，成為這個進化系列中的最終形態。

外觀與皮卡丘相比更加健壯。主要特徵包括尖耳朵、長尾巴以及尾巴末端的閃電形狀。牠的皮毛呈現橙色，臉頰上的電袋能儲存大量電能。在大小和重量上，雷丘比皮卡丘要大許多，身高約0.8米，體重達30公斤左右。電氣能力比皮卡丘更強，能夠放出比皮卡丘更高壓的電流進行攻擊。

純電屬性寶可夢，擅長使用各種電屬性技能，特別對水系和飛行系寶可夢有很大的優勢。然而，非常懼怕地面系寶可夢，因為地面系對電屬性有免疫效果。在戰鬥中以其高速度和強大的特殊攻擊能力見長，是快速的攻擊手。招式主要以電屬性技能為主，擁有豐富的攻擊方式：

十萬伏特（Thunderbolt）：經典的電屬性攻擊技能，能夠對敵人造成大量傷害，並有機會麻痹對手。

打雷（Thunder）：更強力的電屬性招式，雖然威力極大，但命中率較低，需謹慎使用。

伏特攻擊（Volt Tackle）：專屬的招式，這是一個高威力的物理攻擊，但使用後會讓自己受到反作用傷害。

雷丘是從皮卡丘進化而來的。當在遊戲中使用雷之石時，皮卡丘會立即進化成雷丘。這個進化使雷丘在能力值上有顯著提升，尤其是在攻擊和速度上，讓牠在戰鬥中能夠迅速擊敗對手。此外，在第七世代（太陽／月亮）遊戲中，雷丘還有一個阿羅拉地區的形態，這種形態的雷丘具有雙屬性：電／超能力系。阿羅拉雷丘擁有更特別的外觀設計和不同的技能配置，這一變化讓雷丘在對戰中的應用更加多樣化。

優點： 雷丘的主要優點在於其高速度和高特殊攻擊。雷丘能夠在短時間內對對手造成巨大的傷害，尤其是在面對水系和飛行系寶可夢時，雷丘的電屬性攻擊能讓牠占據絕對優勢。此外，雷丘能夠學會一些多樣的技能，如鋼屬性的鐵尾，能彌補電屬性對岩石系和地面系的劣勢。

缺點： 然而，雷丘的主要缺點在於其防禦力較低。由於雷丘比較脆弱，一旦遇到攻擊力強大的對手，很容易被擊倒。特別是面對地面系寶可夢，雷丘的電屬性攻擊完全無效，使牠在這類對戰中非常不利。此外，攻擊招式雖然強大，但部分技能的反作用效果（如伏特攻擊）可能會導致自己受到傷害。

雖然因為皮卡丘的高人氣而稍顯被忽略，但在玩家群體中依然擁有相當穩固的支持者。擁有的高速度和強大攻擊力讓牠在遊戲對戰中表現不俗，特別是在需要快速解決對手的戰術中，雷丘常常是理想的選擇。阿羅拉形態的推出，也讓雷丘再次成為玩家們關注的焦點，為這個寶可夢增添更多的戰術可能性。

總體來說，這是兼具力量與速度的電屬性寶可夢，適合那些喜歡快攻打法的玩家。在不同的遊戲中，憑藉其多樣的技能和不俗的進攻表現，仍然是寶可夢世界中不可忽視的強大夥伴。

Raichu (Japanese: ライチュウ, ) is a well-known Electric-type Pokémon from the Pokémon series, first introduced in the first-generation games Pokémon Red/Green. It is the evolved form of Pikachu, obtained when Pikachu is exposed to a Thunder Stone. While Pikachu is more famous due to its status as the mascot of the franchise, Raichu is the final evolution in this line, boasting greater battle capabilities and a more mature design.

In terms of appearance, Raichu is more robust compared to Pikachu. Its key features include sharp ears, a long tail with a lightning-shaped tip, and orange fur. Its electric pouches on its cheeks store a large amount of electricity. Raichu is considerably larger than Pikachu, standing at around 0.8 meters tall and weighing approximately 30 kilograms. Raichu's electrical abilities are much stronger than Pikachu's, allowing it to release higher-voltage electric currents during battle.

As a pure Electric-type Pokémon, Raichu specializes in using a variety of Electric-type moves, making it highly effective against Water- and Flying-type Pokémon. However, it has a significant weakness against Ground-type Pokémon, as Ground-type moves are immune to Electric-type attacks. Raichu excels in battles due to its high speed and powerful special attack, making it a swift and effective attacker.

Raichu’s move set mainly consists of Electric-type attacks, offering a variety of offensive options:

Thunderbolt: A classic Electric-type move that deals significant damage and has a chance to paralyze the opponent.

Thunder: A stronger Electric-type move with great power but lower accuracy, requiring careful use.

Volt Tackle: Raichu’s signature move, a high-powered physical attack that causes recoil damage to the user after landing a hit.

Raichu evolves from Pikachu after being exposed to a Thunder Stone. This evolution greatly boosts Raichu’s stats, particularly in attack and speed, allowing it to quickly defeat opponents in battle.

In addition, Raichu has an alternate form introduced in the seventh generation (Pokémon Sun/Moon) known as the Alolan Raichu. This regional variant is a dual Electric/Psychic-type and features a unique design along with different moves. Alolan Raichu’s introduction gave players new strategic options in battles, further increasing Raichu’s versatility.

Strengths: Raichu’s primary strengths lie in its high speed and special attack. It can deal massive damage in a short time, especially when facing Water- or Flying-type Pokémon, where its Electric moves provide a significant advantage. Additionally, Raichu can learn a variety of moves, including the Steel-type move Iron Tail, which helps mitigate its disadvantage against Rock- and Ground-type opponents.

Weaknesses: Despite its strengths, Raichu’s main weakness is its low defense. Being relatively fragile, Raichu can be easily knocked out by stronger attackers. Its Electric-type moves are completely ineffective against Ground-type Pokémon, putting Raichu at a disadvantage in such matchups. Moreover, some of Raichu's powerful moves, like Volt Tackle, have recoil effects that can damage Raichu, adding a layer of risk to its offensive capabilities.

Although Raichu may be overshadowed by Pikachu’s popularity, it still has a dedicated following among players. Its speed and strong offensive abilities make it a solid choice in competitive battles, especially for players who favor quick, aggressive strategies. The introduction of Alolan Raichu also brought new attention to Raichu, offering more tactical possibilities and renewing interest in this evolution line.

Overall, Raichu is a powerful Electric-type Pokémon that combines speed and strength, making it an excellent choice for players who prefer fast-paced attacks. Its wide array of moves and impressive combat performance have ensured its lasting place in the Pokémon universe as a formidable partner.