Also known as: トリガー(ウルトラマン), ウルトラマントリガー, ウルトラマントリガー(キャラクター), 特利迦奥特曼
The titular Ultra of Ultraman Trigger (Series). His human host (form?) is Manaka Kengo.
In terms of design and aesthetics, he is based on Ultraman Tiga, hence the moniker, "New Generation Tiga".