Character: jake cottontail
A character belonging to the artist Amarimasi, Jake is a preteen male rabbit who has been described by the artist as being 'inexplicably irresistible', as seemingly everyone who comes in contact with Jake ends up having sex with him, with his most notable relationship being with otter girl Katie Kirster, whom he seems to have genuine feelings for.
Note that initiating a sexual encounter is rarely his idea, and that such encounters tend to have the characters aggressively seducing Jake at best and forcing themselves on him at worst. Jake appears to be bisexual, as he has had agreeable sexual encounters with characters of both genders, but it is difficult to tell since much of his sex life is non-consensual.