Pokémon Brilliant Diamond and Shining Pearl feature a lot of Pokémon to find and catch, and few are as good as Gible and its final evolution, Garchomp. This Pokémon line has a Dragon and ground typing and some great stats. Here is how to find and catch Gible in Pokémon Brilliant Diamond and Shining Pearl.
You will need both the Cut HM and the Strength HM. With those acquired, head to Wayward Cave, which is on Route 206. It is located at the northernmost point of the Route. You will need to use both Cut and Strength to get into Wayward Cave. Once inside, just explore until you encounter Gible. Then just catch Pokémon as you would any other encounter.
Garchomp is a fantastic Pokémon and the pseudo-legendary of Gen IV that will boost the strength of your team. If you need further evidence of the Pokémon's power, you can get this by battling a certain trainer later on in Pokémon Brilliant Diamond and Shining Pearl.
It will take you a while to evolve Gible until Gabite and eventually Garchomp. Gible evolves at level 24, and Gabite will evolve at level 48. But training this Pokémon line is well worth it for a strong team member.
For more information on Pokémon, check out How to get Eevee in Pokémon Brilliant Diamond and Shining Pearl and How to get Rotom Forms in Pokémon Brilliant Diamond and Shining Pearl on Pro Game Guides.