An oft-times spontaneous adrenaline junkie with a boisterous but very morbid sense of humour. He lives by the motto 'If you've committed to it, do it with all your heart!', and honestly, he's so energetic that it's not hard to believe he does. Loves interesting people, and people who are always willing to try out new things with him. Tends to take dares and do ridiculous things, if only for the rush of danger. He is... ancient, for a Stygian, yet he is as distractible as a child. The madness, they say, leeches on the mind.

His domain has two parts: the surface level and the deep end, literally. One part is a normal-looking rocky cove/rock beach with a fairly ordinary but politely hostile fishing village obsessed with hunting large sea creatures to 'protect themselves' (if he wants to live, Jethro only approaches this place in his alt form). The other part is a jagged semi-submerged cave at the shore that leads to the deep end where Jethro's main HQ lies, accessible only by diving into a pretty pool in said cave.