In this SemEval 2025 Task 11 paper, we tackled three tracks: Multi-label Emotion Detection, Emotion Intensity, and Cross-lingual Emotion Detection. Our approach harnesses diverse external corpora and robust data augmentation techniques across Spanish, English, and Arabic, enhancing both the diversity and resilience of the dataset. Instead of developing separate models for each language, we merge the data into a unified multilingual dataset, enabling our model to learn cross-lingual patterns and relationships simultaneously. Our ensemble architecture integrates the multilingual strengths of XLM-RoBERTa, a zero-shot classification capability via LLaMA 3, and a specialized pretrained model fine-tuned on English emotion classification. Notably, our system achieved strong performance, ranking 13th for Afrikaans (afr) in Track A, 13th for Amharic (amh) in Track B, and 4th for Hindi (hin) in Track C.