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葉 means 'leaf, page, era' and contains the 艹 form of the 'grass' radical 艸 cǎo, the 'life' character 世 shì (whose radical is 一 yī 'one'), and the 'tree' character 木 mù.
密豪 Mìháo as a given name can represent the Irish name Mícheál ['mʲi:ha:l̪ˠ].
密 mì is 'secret'. Its radical is ⼧ mián 'roof', and its other elements are the 'certainly' character 必 bì (itself made of the 'heart' radical 心 xīn and a stroke 丿 piě 'line'), and the 'mountain' character 山 shān. (Compare 密码 mìmǎ 'cipher, cipher code, secret code'.)
豪 háo 'bold' derives from the 'pig' radical 豕 shǐ + the 'tall' character 高 gāo. The pig-radical is an echo of Old English eofor, Modern English ever 'boar'.