looking a little into this and from RigpaWiki
Guru Sengé Dradrok (Skt. Siṃhanāda; Tib. གུ་རུ་སེང་གེ་སྒྲ་སྒྲོག་, Wyl. gu ru seng ge sgra sgrogs; Eng. ‘The Lion’s Roar’) — one of the Eight Manifestations of Guru Rinpoche.
From A Great Treasure of Blessings, page 30: Guru Rinpoche challenged and defeated five hundred upholders of wrong views in debate at Bodhgaya. He reversed their magic with the aid of a wrathful mantra given him by the lion-faced dakini Marajita. He is known as Sengé Dradok, ‘The Lion’s Roar’.
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and
Guru Orgyen Dorje Chang (Skt. Guru Oddiyāna Vajradhara; Tib. གུ་རུ་ཨོ་རྒྱན་རྡོ་རྗེ་འཆང་, Wyl. gu ru o rgyan rdo rje ‘chang) is one of the Eight Manifestations of Guru Rinpoche. This aspect of Guru Rinpoche is sometimes visualized at the centre of the field of merit in the Nyingma tradition. Orgyen Dorje Chang is in sambhogakaya form, with its specific ornaments; holding vajra and bell and his legs in full vajra posture, he embraces white Vajravarahi.
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More on the roaring lion Senge Dradog
and more on the sambhogakaya Urgen Dorje Chang not necessarily counted in the normal eight.
These are the two “blue” manifestations here is a thangka:
Padmasambhava – 8 Forms: Orgyen Dorje Chang
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