I donned the Arsenal jersey in the early 2000s, known for my work rate and tenacity, and I also featured in a World Cup final. Who am I?

1. I was a versatile player, able to cover multiple positions in midfield and defense.
2. I was part of the 'Invincibles' squad.
3. My international career included a World Cup final appearance.
4. My name is not usually the first one that comes to mind when discussing Arsenal legends.