opportunistic

One who takes advantages of whatever opportunites confront them.

someone who immediately takes advantage of a situation to reap some personal benefits

A person willing to befriend any person regardless of race, creed, gender, sexuality or socioeconomic status in the relationship benefits them directly or indirectly by improving their public image. A pure opportunist may be a sociopath, if not they will possess sociopathic qualities. They are not to confused with a scammer or charlatan whose purpose in the moment is a singular task and is not concerned with allegations or their reputation. The opportunist always plays the long-con even if the actions are not scandalous it is still a con due to the fact the motivation is to always position one self to be able to capitalize on any future unforeseen opportunities without attracting suspicion. The opportunist is a illusionist and a mechanic who has a deck full of trump cards and can deal off the boom of the deck.

Someone who see's a chance to move onto the next best thing.

On an average day to day basis, an opportunist is a person who takes immediate advantage of an opportunity to achieve a goal and doesn't even think about the morals, ethics, principles or consequences of that action. They tend to put expediency over morality.

Usually describes desperate people who have never gotten any and dumb criminals.

Someone who takes advantage of situations and people to get what they want. They put material and superficial things above people, and their wants over the needs of others. In a way, many politicians are also opportunists because they take advantage of the socially downtrodden to shove socialism and more government down our throats.

A seeker of opportunity. A person who maximizes his/her benefit in every action he/she takes.