美剧《地球百子》中的角色。由阿莉西娅·狄南·凯莉饰演。
地表人类首领，十二部落联盟的Heda。
是地表人中少有的追求和平的人士，在武力和智慧上都极为卓越，隐忍而坚强。
人物介绍
Lexa是《地球百子》中的客串角色。虽然是客串，但Lexa独特的个人魅力力压各路主角。
她是夜血（Nightblood）的继承者，地表人类（Grounder）的首领（Commander，Heda），统领12部落联盟。继任前曾是Anya的副官和弟子。
她是在武力和智慧上都极为优秀的首领，冷酷无情，理性地判断一切，隐忍而坚强，因为她认为“Love is weakness”。
即使是这样，她仍对Clarke表现出了不同寻常的关心。
角色分析
在武力至上的地表人世界中，Lexa是少有的向往和平的指挥官。她与Clarke达成共识，协力对抗山地人（Mountain Man）。之后却权衡得失，与山地人达成协议，夺还被囚禁的部落人后撤军，把百子的幸存者置于危境。这一背叛使Clarke对Lexa恨之入骨。
第三季中，Lexa派人救出了遭到追杀的Clarke，但并不能得到对方的谅解。
期间Clarke对Lexa一度起了杀意，之后才逐渐原谅了她。
为了保护Clarke的人民，Lexa力排众议，将方舟领地纳入第十三部落（the 13th clan）。与此同时方舟人却遭到了冰之国的袭击，损失惨重，也使方舟人对地表人类失去了信任。
因为Lexa对方舟人的接纳，使其它部落颇为不满，遭到弹劾。Lexa接受了冰之国的挑战，生死决斗中击败Roan，杀死女王Nia，为方舟人报了仇。然而方舟领导层却恩将仇报，屠杀了Lexa派去保护他们的数百名战士。Lexa非常愤怒，却在Clarke的劝阻下没有加以报复。
就这样，Lexa把自己置于了腹背受敌的境地。
如此一个极具个性的角色，却极其意外地死于流弹。原因之一可能是饰演者Alycia的档期问题，很其中更可能是编剧的恶意。"Lexa deserve better"也在欧美社交媒体掀起了巨大浪潮。
在第三季季终集中，当Clarke在幻境中遭到了光之城众人的围殴时，Lexa出现了。因为她的精神有一部分保存在火种（The Flame）——也就是A.L.I.E 2.0的芯片中。她再一次保护了Clarke，也可能是最后一次。离别之际，Clarke终于说出了”I love you“，而Lexa的回答是——"I‘ll always be with you."
明知无法相随，仍要给予希望。她迄今为止的行动无不表明她对Clarke的爱意，毋须说出口。”I‘ll always be with you." 大概是最符合Commander Lexa的深情告白了。
“You were right，Clarke. Life is about more than just surviving."
——“ In peace may you leave this shore.
In love may you find the next.
Safe passage on your travels...
Until our final journey to the ground.
May we meet again."——
其它
1.因为独特的战妆，Lexa被粉丝亲切地称为小浣熊。结合饰演者Alycia的逗比属性，可以叫她浣熊宝宝。
2.Lexa的首都Polis的高塔中放满了蜡烛。在各个镜头，无论是都城还是帐篷中，背景都可以看到很多蜡烛。所以Lexa应该很喜欢蜡烛。
3.Clarke×Lexa的CP组合称为Clexa。
4.Lexa和Clarke的饰演者——Alycia Debnam-Carey与Eliza Taylor在戏外也成了死党。
5.Clarke被Raven问到Lexa最经常不断重复的单词或语句时，粉丝们想到的是——Lexa：ClarkeClarkeClarkeClarkeClarkeClarkeClarkeClarkeClarkeClarkeClarke........
（据统计Lexa在剧中一共喊了Clarke 68次。）
经典台词
1.” Blood must have blood.“
2.” We are what we are."
3." But they don't know your suffering will be worse.What you did tonight will haunt you until the end of your days."
4.“I thought I'd never get over the pain,but I did. By recognizing it for what it is...weakeness."
5."Tonight we celebrate our newfound peace,tomorrow we plan our war. To those we've lost,and to those we shall soon find."
6."The dead are gone,Clarke.The living are hungey."
7.【Attack her and you attack me.】
8." Don't be afraid,Clarke.死亡 is not the end."
9."The truth is,we must look into the eyes of our warriors and say, 'Go die for me.' "
10." You could be a leader for your people look into. Someone they fight and die for. You were born for this,Clarke. Same as me."
11."Clarke,sometimes,you have to concede a battle to win a war."
12."Victory stands on the back of sacrifice."
13."What happened here will not stand. The mountain will fall. The dead will be avenged!"
14."Not everyone. Not you."
15."You think our ways are harsh, but that is how we survive."
16."I do care,but I made this choice with my head and not my heart."
17.”The duty to protect my people comes first."
18."No one would dare to move against you because that would be moving against me."
19."You can't run away from who you are,Clarke.Join me. Bow before me,and your people will be safe."
20."Would anyone else care to question my decisions?"
21."I'm sorry. I never meant to turn you into this."
22."I swear a fealty to you,Clarke Kom Skaikru. I vow to treat your needs as my own,and your people as my people."
23.【I'm the commander. No one fights for me.】
24."You're driven to fix everything for everyone,but you can't fix this. I have to do this on my own,and you have to let me."
25."I'm not considering 信息技术 I'm doing it."
26."Our people act as if war is easier than peace. If that's so,should we not try and achieve the more difficult goal?"
27."Titus is my subject.They are all my subjects.Do you say they will defy me? Will you defy me?"
28."Clarke...So blood must not have blood applies only when it is my people who bleed."
29."Her actions show us a promise for a new future,a world in which violence does not always answer violence,a world in which our children can flourish,without the shadow of death."
30."We may be drawing line,but who's to say you cant choose to stay on this side of it?"
31."Azgeda cut off Costia's head and delivered it to my bed. And I still let them into my alliance! I'm more than cable of separating feelings from duTY."
32."You have to go back. They're your people.That's why I-- That's why you're you."
33.【You will never again attempt to harm Clarke. Swear 信息技术】
34."The next commander will protect you."
35."You were right,Clarke. Life is about more than just surviving."
36."Our fight is not over."
37."I told you,my spirit would choose wisely."
38."Go. I'll hold them off."
39."I'll always be with you."
40.“may we meet again”