diff --git a/bin/replace_label.py b/bin/replace_label.py
new file mode 100644
index 0000000..e70d407
--- /dev/null
+++ b/bin/replace_label.py
@@ -0,0 +1,73 @@
+'''
+This script aims to replace label from data file (meta or features) 
+with given new labels. 
+This new labels is taken from character information file. 
+'''
+import argparse
+import numpy as np
+import csv
+from data import read_file, index_by_id, write_line
+
+# -- ARGPARSE
+parser = argparse.ArgumentParser("")
+parser.add_argument("metas", type=str, help="metas file (or features) with character label")
+parser.add_argument("char_info_file", type=str, help="csv file with char info")
+parser.add_argument("--field", type=str, default="gender", help="field of info char file that you want to give as replacement")
+parser.add_argument("--outfile", type=str, default="out.lst", help="outfile")
+parser.add_argument("--lst", default=None, type=str, help="Given list to only take a subset")
+
+args = parser.parse_args()
+
+METAS = args.metas
+CHAR_INFO_FILE = args.char_info_file
+FIELD = args.field
+LST = args.lst
+OUTFILE = args.outfile
+
+# -- READ FILES
+metas = read_file(METAS)
+metas_ind = index_by_id(metas)
+
+char_info = []
+char_info_ind = {}
+with open(CHAR_INFO_FILE, newline='') as f:
+    reader = csv.DictReader(f)
+    for row in reader:
+        char_info.append(row)
+        char_info_ind[row["character_id"]] = row
+ 
+lst = None
+ids = []
+if LST is not None:
+    lst = read_file(LST)
+    ids = [(x[0][0], x[0][3]) for x in lst]
+else:
+    ids = [(x[0][0], x[0][3]) for x in metas]
+
+# -- GET CHARACTERS FOR EACH FILE
+meta_chars = []
+meta_chars_uniq = []
+
+if LST is not None:
+    meta_chars = [metas_ind[x[0][0]][x[0][3]][0][1]  for x in lst]
+else:
+    meta_chars = [x[0][1] for x in metas]
+meta_chars_uniq = np.unique(np.asarray(meta_chars))
+
+info_chars = list(char_info_ind.keys())
+
+# -- CHECK IF A CHARACTERS MATCH
+for char in meta_chars_uniq:
+    if not char in info_chars:
+        print("A character is not in the information file: " + str(char)) 
+        exit(-1)
+
+# -- REPLACE ORIGINAL VALUES AND WRITE FILE
+with open(OUTFILE, "w") as f:
+    for line in ids:
+        line_ = metas_ind[line[0]][line[1]]
+        meta = line_[0]
+        meta[1] = char_info_ind[meta[1]][FIELD]
+        write_line(meta, line_[1], f)
+
+