In Shakespeare's MACBETH the two Macbeths, Macbeth and Lady Macbeth, both go through changes. The do so much go through physical changes but the go through mental changes. They also lose loyalty to their country, king, and each other; the later applies more to Macbeth then his lady. .
To start with Macbeth would be getting in to deep to quick. So therefore we start with his lady, Lady Macbeth. In the beginning Lady Macbeth is not loyal; we know this because she says " That croaks the fatal entrance of Duncan / Under my battlements. Iv". When she says this she has already planned the murder of Duncan. At this point to carry out the murder all she needs to do is to convince Macbeth to help with the murder. .
However, Macbeth is very loyal to Duncan at this time. He severs in the army under Duncan; he also shows respect to him, which as encouraged a strong bond between them. Macbeth appears to be one of the last people to be persuaded to commit regicide; but his lady is able to convince him to commit the crime. She is easily able to do this by recalling Macbeth's encounter with the witches. "All hail, Macbeth, that shalt be King / hereafter! Iiii".
Once he as been convinced to commit the crime of regicide he faces one of many tragic flaws that bring his downfall upon him. His first flaw is the obvious, regicide. This is could have been an avoidable flaw if Lady Macbeth would have had courage. " Had he not resembled / My father as he slept, I had done't. Iiii". This is the one quote the could have save Macbeth; to a point this shows that there is a lack of courage in her heart for not having the strength to carry out her plan herself.
This brings on to Macbeth his second and deadliest flaw hubris. Hubris seems always to be the deadly flaw in characters of high position, take Julius Caesar, Achilles, and Odysseus for examples all of them had too much pride (hubris). Macbeth becomes over filled with hubris after he becomes king.