Learning Arrays and Objects with Voltron Characters

I am confused about negative checking in Javascript. Fixing this.

by db_dev

HTML

<dl id="paladins"></dl>
<dl id="lions"></dl>

SCSS

body {
    font-family: "Open Sans";
    font-size: 11px;
}
// Definition List
dl {
    dt {
        font-weight: bold;
    }
    dd {
        margin-left: 12px;
    }
}

JavaScript

paladins = ["Shiro", "Keith", "Lance", "Hunk", "Pidge"]

$("<dt>Paladins of Voltron</dt>").appendTo("#paladins");
$.each(paladins, function(i, v) {
    $("<dd>" + v + "</dd>").appendTo("#paladins");
});
//---------------------------------------------------------

// Check to see if any member is Altean

function teamMember(name, race, role) {
    this.name = name;
    this.race = race;
    this.role = role;
}

var allura = new teamMember("Princess Allura", "Altean", "Leader");
var coran = new teamMember("Coran Hieronymus Wimbleton Smythe", "Altean", "Advisor");
var shiro = new teamMember("Shiro", "Human", "Pilot");
var keith = new teamMember("Keith", "Human", "Pilot");
var lance = new teamMember("Lance", "Human", "Pilot");
var hunk = new teamMember("Hunk", "Human", "Pilot");
var pidge = new teamMember("Pidge", "Human", "Pilot");
var kolivan = new teamMember("Kolivan", "Galra", "Leader");

function voltronLion(color, weapon, pilot) {
    this.color = color;
    this.weapon = weapon;
    this.pilot = pilot;
}
var blackLion = new voltronLion("Black", "Sword", shiro);
var redLion = new voltronLion("Red", "Sword", keith);
var greenLion = new voltronLion("Green", "Grapple", pidge);
var blueLion = new voltronLion("Blue", "Energy Chain", lance);
var yellowLion = new voltronLion("Yellow", "Cannon", hunk);

var lions = [];
lions.push({
    blackLion,
    redLion,
    blueLion,
    greenLion,
    yellowLion
});

$.each(lions, function(i, v) {
    $.each(lions[i], function(k, v) {
        var phrase = v.pilot.name + "(" + v.pilot.race + "), " + v.weapon;
        var title = "<dt>" + v.color + " Lion </dt>"
        $(title).appendTo("#lions");
        $("<dd>" + phrase + "</dd>").appendTo("#lions");
    })
});
//----------------------------------------------------------------
function galraSoldier(name, rank, loyalTo) {
    this.name = name;
    this.rank = rank;
    this.loyalTo = loyalTo;
}
var prorock = new galraSoldier("Prorock", "Commander", "Zarkon");
var throk = new...