diff --git a/.gitignore b/.gitignore
index 14885812..daac8aad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,8 @@
-node_modules
+node_modules/
+dist/
 .env
-.env.funder
-*.pem
+__pycache__/
+.vitest
+coverage/
+*.log
+.DS_Store
\ No newline at end of file
diff --git a/src/services/hero-data.service.ts b/src/services/hero-data.service.ts
new file mode 100644
index 00000000..52862a71
--- /dev/null
+++ b/src/services/hero-data.service.ts
@@ -0,0 +1,90 @@
+// Hero Data Service
+// Manages hero information retrieval with flexible, extensible design
+
+export interface Hero {
+  id: number;
+  name: string;
+  realName: string;
+  description: string;
+  powers: string[];
+}
+
+export class HeroDataService {
+  private heroes: Hero[] = [
+    {
+      id: 1,
+      name: 'spiderman',
+      realName: 'Peter Parker',
+      description: 'Friendly neighborhood Spider-Man',
+      powers: ['web-slinging', 'spider-sense', 'wall-crawling']
+    },
+    {
+      id: 2,
+      name: 'ironman',
+      realName: 'Tony Stark',
+      description: 'Genius, billionaire, philanthropist',
+      powers: ['powered armor', 'advanced technology', 'flight']
+    },
+    {
+      id: 3,
+      name: 'captainamerica',
+      realName: 'Steve Rogers',
+      description: 'Super soldier and Avengers leader',
+      powers: ['enhanced strength', 'tactical genius', 'shield mastery']
+    }
+  ];
+
+  /**
+   * Get hero by name (case-insensitive)
+   * @param name Hero name to search
+   * @returns Hero object or undefined
+   */
+  getHeroByName(name: string): Hero | undefined {
+    if (!name) {
+      throw new Error('Hero name is required');
+    }
+
+    const normalizedName = name.toLowerCase().replace(/\s/g, '');
+    return this.heroes.find(
+      hero => hero.name.toLowerCase() === normalizedName
+    );
+  }
+
+  /**
+   * Get all heroes
+   * @returns Array of heroes
+   */
+  getAllHeroes(): Hero[] {
+    return [...this.heroes];
+  }
+
+  /**
+   * Add a new hero to the collection
+   * @param hero Hero object to add
+   * @returns Added hero
+   * @throws Error if hero already exists or is invalid
+   */
+  addHero(hero: Hero): Hero {
+    // Validate hero
+    if (!hero.name || !hero.realName) {
+      throw new Error('Hero name and real name are required');
+    }
+
+    // Check for existing hero
+    const existingHero = this.getHeroByName(hero.name);
+    if (existingHero) {
+      throw new Error(`Hero with name ${hero.name} already exists`);
+    }
+
+    // Assign new ID if not provided
+    if (!hero.id) {
+      hero.id = this.heroes.length + 1;
+    }
+
+    this.heroes.push(hero);
+    return hero;
+  }
+}
+
+// Export singleton instance
+export const heroDataService = new HeroDataService();
\ No newline at end of file