Pack Mentality

Danny mostly appears in relation to Jackson through Season 1. He is the Cyclones's goalie. When Lydia decides that she and Jackson are hanging out with Scott and Allison, Danny comes to sit at the lunch table with them. He gives Stiles the cold shoulder.

The Tell 

In Chemistry class, Stiles asks Danny about the attack in Video2C that Jackson and Lydia witness. At first, he asks Danny if he saw Lydia in homeroom. Danny says he didn't. Stiles then asks him if he finds him attractive. Danny takes awhile to answer, and Stiles leans so far forward that he falls out of his seat before Danny can reply.

Lunatic

On the night of the February full moon, Scott knocks him down and gives him a bloody nose. Stiles points out that being mean to Danny will get everyone angry with him because everyone likes Danny.

Wolf's Bane 

Danny is Stiles's lab partner in Chemistry, which is how Stiles gets him over to his house to ask for his help in tracing a text. Stiles realizes that Danny keeps looking at Derek convinces him to do the trace by having Derek strip off his shirt multiple times. Danny tells Stiles he's a terrible person, and Stiles unabashedly agrees. Danny is able to trace the text to a computer at Beacon Hills Hospital that belongs to Melissa McCall.

Co-captain 

After a successful lacrosse game, Danny calls to Scott in the boys locker room and tells him that his apology is accepted. Scott isn't sure what he's talking about, and Danny clarifies that Scott kept passing him the ball. Scott says that he kept passing him the ball because he kept scoring. Danny smiles and declares his apology is accepted. 

Formality 

At the winter formal, Scott uses Danny to escape from Coach Finstock. Scott is banned from the dance because of his grades, but he insists on going anyway. As the Coach chases him, Scott begs Danny to dance with him. Danny doesn't really agree, but Scott holds onto him anyway, and it makes the Coach look homophobic when he tries to throw Scott out. Danny's date is confused by what just went on, and Danny can only shrug.