What can one conclude about Puck's physical description in Shakespeare's A Midsummer Night's Dream ?

Shakespeare usually relies on indirect
characterization rather than direct, meaning
that he does not come right out and tell us what a character is like or looks like.
Instead, he paints the pictures of characterization through dialogue and through other
characters' responses to the characters. Puck is one character that is characterized
indirectly.

One thing we learn through dialogue about Puck's
appearance is that he is very small. We learn about his size when Puck describes one of
his antics as hiding in an old woman's ale mug pretending to be a crabapple. When the
woman takes a drink, he then spills the ale all over her neck, as we see in his
lines:

And
sometime lurk I in a gossip's bowl
In very likeness of a roasted
crab,
And, when she drinks, against her lips I bob,
And on her
withered dewlap pour the ale.
(II.i.48-51)

Since Puck is
imitating a crabapple, which was used to spice drinks, we know that he is very
small.

Another thing we can surmise about Puck's appearance is that he
may actually be very ugly. A Puck is a Hobgoblin, which is not only a devilish sprite,
or fairy, it is also a goblin, which is a particularly "grotesque," or ugly sprite or
elf (Collins English Dictionary).

Finally, we also know that Puck has
very speedy flying capabilities. We know this because, when Oberon commands him to find
the "love-in-idleness flower," Puck replies, "I'll put a girdle round about the earth /
In forty minutes" (178-179). In other words, Puck is saying that he'll circle around the
earth in forty minutes.