diff --git a/lib/granblue/data_importer.rb b/lib/granblue/data_importer.rb
new file mode 100644
index 0000000..8e16a0b
--- /dev/null
+++ b/lib/granblue/data_importer.rb
@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+module Granblue
+  class DataImporter
+    def initialize(test_mode: false, verbose: false)
+      @test_mode = test_mode
+      @verbose = verbose
+      @import_logs = []
+    end
+
+    def process_all_files(&block)
+      files = Dir.glob(Rails.root.join('db', 'seed', 'updates', '*.csv')).sort
+
+      files.each do |file|
+        if (new_records = import_csv(file))
+          block.call(new_records) if block_given?
+        end
+      end
+
+      print_summary if @test_mode
+    end
+
+    private
+
+    def import_csv(file_path)
+      filename = File.basename(file_path)
+      return if already_imported?(filename)
+
+      importer = create_importer(filename, file_path)
+      return unless importer
+
+      log_info "Processing #{filename} in #{@test_mode ? 'TEST' : 'LIVE'} mode..."
+      new_records = importer.import
+      log_import(filename)
+      log_info "Successfully processed #{filename}"
+      new_records
+    end
+
+    def create_importer(filename, file_path)
+      # This pattern matches both singular and plural: character(s), weapon(s), summon(s)
+      match = filename.match(/\A\d{8}-(character(?:s)?|weapon(?:s)?|summon(?:s)?)-\d+\.csv\z/)
+      return unless match
+
+      matched_type = match[1]
+      singular_type = matched_type.sub(/s$/, '')
+      importer_class = "Granblue::Importers::#{singular_type.capitalize}Importer".constantize
+
+      importer_class.new(
+        file_path,
+        test_mode: @test_mode,
+        verbose: @verbose,
+        logger: self
+      )
+    rescue NameError
+      log_info "No importer found for type: #{singular_type}"
+      nil
+    end
+
+    def already_imported?(filename)
+      DataVersion.imported?(filename)
+    end
+
+    def log_import(filename)
+      return if @test_mode
+      DataVersion.mark_as_imported(filename)
+    end
+
+    def log_operation(operation)
+      if @test_mode
+        @import_logs << operation
+        log_info "[TEST MODE] Would perform: #{operation}"
+      end
+    end
+
+    def print_summary
+      log_info "\nTest Mode Summary:"
+      log_info "Would perform #{@import_logs.size} operations"
+      if @import_logs.any?
+        log_info 'Sample of operations:'
+        @import_logs.first(3).each { |log| log_info "- #{log}" }
+        log_info '...' if @import_logs.size > 3
+      end
+    end
+
+    def log_info(message)
+      puts message if @verbose || @test_mode
+    end
+  end
+end