| image = Colin-GX02TFGX.png| ja_name caption = 愛怒瑠夫| romaji_name = Colin, in ''Tag Force 1-3''

| gx02_deck = * Idol Deck 1* Idol Deck 2

| gx06_deck =Reason to Live

'''Colin''', known as '''Doruo Ai''' in the Japanese version. He , is a [[Ra Yellow]] student character in the [[Yu-Gi-Oh! Tag Force|''Tag Force'' series]]. He is a [[Ra Yellow]] student. Colin's given Japanese name, Doruo, is derived from ''doruota'' (ドルオタ), a term for otakus obsessed with female idols. The games poke fun at this by having Colin belittling the inclusion of "card crushes" in Decks while using Decks revolving entirely around said cards.

==Sandwiches=Tag Force===Colin is the only Tier 3 character in the first game that has more than 1 Deck, but he does not use his second Deck at any point outside of Free Duel Mode. He gives out both of his Deck Recipes at the same time. Defeating Colin 10 times earns the player 1 copy of "[[Doriado's Blessing]]". Colin is [[Vyga]]'s partner during the Tag Force Tournament. ===Tag Force 2-3===Colin teams up with [[Deron]] for the Ra Yellow Tournament. {{-}} ==Gifts==The player is able to give Colin sandwiches. The following tables detail table details how much he likes or dislikes the sandwiches. ===Tag Force 2=== {{Tag Force sandwich responses| game = Yu-Gi-Oh! GX Tag Force 2| gender = Male | 5_response = (Your partner is really happy!)| 5_sandwiches = * Golden Egg Sandwich* Durian Sandwich* Hot Pepper Sandwich* Jam Sandwich* Sausage Sandwich* Top-grade Salad Sandwich | 4_response = (Your partner is happy!)| 4_sandwiches = * Carrot Sandwich* Chocolate Sandwich* Cook's Sandwich* Cream Sandwich* Spicy Curry Sandwich* Spicy Fish Egg Sandwich | 3_response = (Not much of a reaction...)| 3_sandwiches = * Caviar Sandwich* Cheese Sandwich* Chicken Sandwich* Croquette Sandwich* Curry Sandwich* Dried Mackerel Sandwich* Dried Sardine Sandwich* Fermented Cheese Sandwich* Fermented Soybean Sandwich* Foie Gras Sandwich* Fried Noodle Sandwich* Fried Shrimp Sandwich* Garlic Sandwich* Gyoza Sandwich* Kimchi Sandwich* Lettuce Sandwich* Lobster Sandwich* Phantom Pepper Sandwich* Plain Sandwich* Ramen Noodle Sandwich* Rice Ball Sandwich* Salmon Sandwich* Soba Noodle Sandwich* Steak Sandwich* Sweet Bean Paste Sandwich* Sweet Chestnut Sandwich* Tofu Sandwich | 2_response = (Your partner didn't seem to like it!)| 2_sandwiches = * Goya Sandwich* Ham Sandwich* Hamburger Sandwich* Tomato Sandwich* Truffle Sandwich | 1_response = (You partner didn't like it!)| 1_sandwiches = * Grape Sandwich* Melon Sandwich* Normal Egg Sandwich* Pineapple Sandwich* Tangerine Sandwich}} ===Tag Force 3=== {{Tag Force sandwich responses| game = Yu-Gi-Oh! GX Tag Force 3| gender = Male| uses_ja_dialogue = true | 5_response = It's pretty good!<br/>I'm not a big fan of sandwiches, but this is delicious!| 5_sandwiches = * Golden Egg Sandwich* Durian Sandwich* Hot Pepper Sandwich* Jam Sandwich* Sausage Sandwich* Top-grade Salad Sandwich | 4_response = Oh...<br/>It's quite a bit better than I expected it to be...| 4_sandwiches = * Carrot Sandwich* Chocolate Sandwich* Cook's Sandwich* Cream Sandwich* Spicy Curry Sandwich* Spicy Fish Egg Sandwich | 3_response = Eh, it's not too bad.| 3_sandwiches = * Caviar Sandwich* Cheese Sandwich* Chicken Sandwich* Croquette Sandwich* Curry Sandwich* Dried Mackerel Sandwich* Dried Sardine Sandwich* Fermented Cheese Sandwich* Fermented Soybean Sandwich* Foie Gras Sandwich* Fried Noodle Sandwich* Fried Shrimp Sandwich* Garlic Sandwich* Gyoza Sandwich* Kimchi Sandwich* Lettuce Sandwich* Lobster Sandwich* Phantom Pepper Sandwich* Plain Sandwich* Ramen Noodle Sandwich* Rice Ball Sandwich* Salmon Sandwich* Soba Noodle Sandwich* Steak Sandwich* Sweet Bean Paste Sandwich* Sweet Chestnut Sandwich* Tofu Sandwich | 2_response = Egh... No good.<br/>This is why I don't like sandwiches.| 2_sandwiches = * Goya Sandwich* Ham Sandwich* Hamburger Sandwich* Tomato Sandwich* Truffle Sandwich | 1_response = Agh!<br/>You mean sandwiches are always this bad!?| 1_sandwiches = * Grape Sandwich* Melon Sandwich* Normal Egg Sandwich* Pineapple Sandwich* Tangerine Sandwich}} ==Ending Scenes==

===<gallery>TF3-Ending-Tier-3-Yellow-Localized.png | ''Tag Force3''===(Localized){| class="wikitable hlist hcomma" width="100%"|TF3-Ending-Tier-3-Yellow-!! scope="col" Japanese.png | Strongly likes''Tag Force 3'' (Japanese)! scope="col" | Likes! scope="col" | Neutral! scope="col" | Dislikes! scope="col" | Strongly dislikes|-|}</gallery>

==Decks==Colin's first Deck in ''Tag Force 2''==={| class=is a '''[[Charmer]] Deck''' that also features "wikitable hlist hcomma[[Elemental Mistress Doriado]]" width=, while his second Deck is a '''[[Burn]] Deck''' focusing on "100%[[White Magician Pikeru]]"|-!! scope=and "col[[Ebon Magician Curran]]" | Strongly likes! scope="col" | Likes! scope="col" | Neutral! scope="col" | Dislikes! scope="col" | Strongly dislikes|-|}. [[Deron]] would use a Deck similar to the latter in the following games.

===In ''Tag Force 2'' and ''Tag Force 3''==={| class="wikitable hlist hcomma" width="100%"|-!! scope="col" | Strongly likes! scope="col" | Likes! scope="col" | Neutral! scope="col" | Dislikes! scope=, Colin's Decks focus on "col[[Elemental Mistress Doriado]]" | Strongly dislikes|-|}.

In ''[[Yu-Gi-Oh! GX Tag Force]]'', Colin plays a Deck called '''Idol Deck 1''', featuring the "[[Charmer]]" monsters, along with "[[Elemental Mistress Doriado]]".{{Decklist|name = Idol Deck 1| ja_name = アイドルデッキ甲| romaji_name = Aidoru Dekki Kō| level = 3

|effect Monsters monsters =

Colin later uses a Deck focused on "[[White Magician Pikeru]]" and "[[Ebon Magician Curran]]", with support from [[Tokens]] and cards that cause [[direct damage]]. Another Ra Yellow student, [[Deron]], uses a similar Deck. {{Decklist|name = Idol Deck 2| ja_name = アイドルデッキ乙| romaji_name = Aidoru Dekki Otsu| level = 3

<br /> ===Tag Force 2=== {{Decklist| name = Reason to Live 1| ja_name = 生きがい１| romaji_name = Ikigai 1| level = 2|normal monsters =* [[Archfiend Marmot of Nefariousness]]* [[Dryad]]* [[Gigobyte]]* [[Lady of Faith]]* [[Petit Dragon]]|effect monsters =* [[Aussa the Earth Charmer]]* [[Avalanching Aussa]]* [[Blazing Hiita]]* [[Eria the Water Charmer]]* [[Familiar-Possessed - Aussa]]* [[Familiar-Possessed - Eria]]* [[Familiar-Possessed - Hiita]]* [[Familiar-Possessed - Wynn]]* [[Fox Fire]]* [[Hiita the Fire Charmer]]* [[Injection Fairy Lily]]* [[Raging Eria]]* [[Storming Wynn]]* [[Wynn the Wind Charmer]]|ritual monsters =* [[Elemental Mistress Doriado]] x3|spells =* [[Advanced Ritual Art]] ([[Destiny Draw (rule)|D]])* [[Chorus of Sanctuary]]* [[Doriado's Blessing]] x2|traps =* [[Fuh-Rin-Ka-Zan]] x3* [[Hallowed Life Barrier]] x3 ([[Destiny Draw (rule)|D]])* [[Spiritual Earth Art - Kurogane]]* [[Spiritual Fire Art - Kurenai]]* [[Spiritual Water Art - Aoi]]* [[Spiritual Wind Art - Miyabi]]* [[Waboku]] x3 ([[Destiny Draw (rule)|D]])* [[Weed Out]]}} {{Decklist| name = Reason to Live 2| ja_name = 生きがい２| romaji_name = Ikigai 2| level = 4|effect monsters =* [[Element Doom]] x2* [[Element Dragon]] x2* [[Element Magician]] x2* [[Element Saurus]] x2* [[Element Valkyrie]] x2* [[Familiar-Possessed - Aussa]] x2* [[Familiar-Possessed - Eria]] x2* [[Familiar-Possessed - Hiita]] x2* [[Familiar-Possessed - Wynn]] x2* [[Fox Fire]]* [[Injection Fairy Lily]]* [[Manju of the Ten Thousand Hands]] x3 ([[Destiny Draw (rule)|D]])|ritual monsters =* [[Elemental Mistress Doriado]] x3|spells =* [[Doriado's Blessing]] x2* [[Magical Dimension]]* [[Swords of Revealing Light]] ([[Destiny Draw (rule)|D]])|traps =* [[Fuh-Rin-Ka-Zan]] x3* [[Magician's Circle]] x2* [[Mirror Force]] ([[Destiny Draw (rule)|D]])* [[Waboku]] x2* [[Wall of Revealing Light]] x2}} {{Decklist| name = Reason to Live 3| ja_name = 生きがい３| romaji_name = Ikigai 3| level = 4|effect monsters =* [[Element Doom]] x2* [[Element Dragon]] x2* [[Element Magician]]* [[Element Saurus]] x2* [[Element Valkyrie]]* [[Familiar-Possessed - Aussa]] x2* [[Familiar-Possessed - Eria]] x2* [[Familiar-Possessed - Hiita]] x2* [[Familiar-Possessed - Wynn]] x2* [[Fox Fire]]* [[Injection Fairy Lily]]* [[Manju of the Ten Thousand Hands]] x3|spirit monsters =* [[Yata-Garasu]]|ritual monsters =* [[Elemental Mistress Doriado]] x3|spells =* [[Doriado's Blessing]] x2* [[Magical Dimension]]* [[Snatch Steal]] ([[Destiny Draw (rule)|D]])* [[Swords of Revealing Light]] ([[Destiny Draw (rule)|D]])|traps =* [[Fuh-Rin-Ka-Zan]] x3* [[Magician's Circle]] x2* [[Mirror Force]] ([[Destiny Draw (rule)|D]])* [[Torrential Tribute]]* [[Waboku]]* [[Wall of Revealing Light]] x2}}  ===Tag Force 3=== {{Decklist| name = Reason to Live 1| ja_name = 生きがい１| romaji_name = Ikigai 1| level = 2|normal monsters =* [[Archfiend Marmot of Nefariousness]]* [[Dryad]]* [[Gigobyte]]* [[Lady of Faith]]* [[Petit Dragon]]|effect monsters =* [[Aussa the Earth Charmer]]* [[Avalanching Aussa]]* [[Blazing Hiita]]* [[Eria the Water Charmer]]* [[Familiar-Possessed - Aussa]]* [[Familiar-Possessed - Eria]]* [[Familiar-Possessed - Hiita]]* [[Familiar-Possessed - Wynn]]* [[Fox Fire]]* [[Hiita the Fire Charmer]]* [[Injection Fairy Lily]]* [[Raging Eria]]* [[Storming Wynn]]* [[Wynn the Wind Charmer]]|ritual monsters =* [[Elemental Mistress Doriado]] x3|spells =* [[Advanced Ritual Art]]* [[Chorus of Sanctuary]]* [[Doriado's Blessing]] x2|traps =* [[Fuh-Rin-Ka-Zan]] x3* [[Hallowed Life Barrier]] x3* [[Spiritual Earth Art - Kurogane]]* [[Spiritual Fire Art - Kurenai]]* [[Spiritual Water Art - Aoi]]* [[Spiritual Wind Art - Miyabi]]* [[Waboku]] x3* [[Weed Out]]}} {{Decklist| name = Reason to Live 2| ja_name = 生きがい２| romaji_name = Ikigai 2| level = 3|effect monsters =* [[Element Doom]] x2* [[Element Dragon]] x2* [[Element Magician]] x2* [[Element Saurus]] x2* [[Element Valkyrie]] x2* [[Familiar-Possessed - Aussa]] x2* [[Familiar-Possessed - Eria]] x2* [[Familiar-Possessed - Hiita]] x2* [[Familiar-Possessed - Wynn]] x2* [[Fox Fire]]* [[Injection Fairy Lily]]* [[Manju of the Ten Thousand Hands]] x3|ritual monsters =* [[Elemental Mistress Doriado]] x3|spells =* [[Doriado's Blessing]] x2* [[Magical Dimension]]* [[Monster Reborn]]* [[Swords of Revealing Light]]|traps =* [[Fuh-Rin-Ka-Zan]] x3* [[Magician's Circle]] x2* [[Mirror Force]]* [[Waboku]] x2* [[Wall of Revealing Light]]}} {{Decklist| name = Reason to Live 3| ja_name = 生きがい３| romaji_name = Ikigai 3| level = 4|effect monsters =* [[Apprentice Magician]] x3* [[Cyber Jar]] ([[Destiny Draw (rule)|D]])* [[Familiar-Possessed - Aussa]] x2* [[Familiar-Possessed - Eria]] x2* [[Familiar-Possessed - Hiita]] x2* [[Familiar-Possessed - Wynn]] x2* [[Injection Fairy Lily]] x3* [[Magician of Faith]]* [[Manju of the Ten Thousand Hands]] x3* [[Old Vindictive Magician]] x2* [[Witch of the Black Forest]]|ritual monsters =* [[Elemental Mistress Doriado]] x2|spells =* [[Doriado's Blessing]] x2* [[Magical Dimension]] x2* [[Monster Reborn]]* [[Secret Village of the Spellcasters]] x3* [[Swords of Revealing Light]] ([[Destiny Draw (rule)|D]])|traps =* [[Fuh-Rin-Ka-Zan]] x2* [[Magician's Circle]] x2* [[Mirror Force]] ([[Destiny Draw (rule)|D]])* [[Torrential Tribute]]* [[Wall of Revealing Light]]}}