Helen is smart, brave, sweet, kind, nifty, and level-headed, though at times she usually tries to act rational and wise, making her an ideal older sister figure. Helen is usually more careful and less aggressive, causing occasional arguments. On the other hand, she stated that they worked better teaming together than with other Plumbers and shows true concern when seeing him injured or in danger. However, she is slightly insecure about her half-alien DNA. But she does like to run.