After the series of energy signatures in several places indicating that there is more than one portal, Mexico took precautions by creating Riesgo Blanco, their most powerful Jaeger. It was constructed in Jalisco, Mexico, where it is also stationed. It's first mission took place in 2027, in one of the series of attacks during the beginning of the Second Kaiju War, it was to stop the Kaiju Brûler from destroying Paris, France.
Riesgo Blanco's first confrontation was with the kaiju Bruler. Bruler is detected going towards Paris, France from the Atlantic breach, and Riesgo Blanco is sent to intercept Brulers attack. Unfortunately, Riesgo Blanco arrives barely before Bruler begins to attack France. It notices Riesgo and launches an oily substance towards it, melting its armor. Riesgo then uses its Electrical Discharge, doing much damage to Bruler. Bruler gets angered and knocks Riesgo to the floor, then runs and sprayed the oily substance over most of Paris. The PPDC realized that this is a tough foe and sends in Gipsy Danger 2.0 to assist Riesgo. Bruler then realizes that it is outnumbered and retreats back into the ocean and into the Atlantic breach.